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Frequently Asked Questions / FAQs

1. General questions on callas software products

Question: What is the target user group of the callas software pdfToolbox products?

Answer: pdfToolbox Desktop is targeted towards people who want to manually inspect or correct PDF files. It can be used either as a plug-in for Adobe Acrobat or as a standalone application (without requiring any Adobe software to be installed). pdfToolbox Server is oriented towards environments where fully unattended inspection and fixing is required. It can be configured with hot folders (also called watched folders) or can be integrated more closely into a solution using the available command-line interface.


Question: I am using pdfToolbox Desktop or Server 6.0 or older. Can I get the latest version?

Answer: Yes you can. Whether this will be with or without cost depends mainly on whether you have an active maintenance agreement for your software. Please contact your reseller or send an email to orders@callassoftware.com to inquire about more details.

Question: Do I need Adobe Acrobat Standard or Professional to process PDF files with the callas software tools?

Answer: No. You can use pdfToolbox Desktop as a plug-in for Adobe Acrobat is you choose to do so, but it can also be used as a completely independent application. The automated solutions (pdfToolbox Server / CLI) are always completely independent.


Question: Are the demo versions identical to the full versions?

Answer: Yes, the demo versions are fully-functional. However, they have a restricted lifetime. You can test our software for 15 days without restriction or obligation.


Question: Where can I buy your products?

Answer: callassoftware has an extensive list of partners that can provide local support and help with training / installation when required. You can find the full list of partners here. Alternatively the interactive products can be bought from the callas web shop here.


Question: Who do I contact if I have general questions on a product?

Answer: Your first point of contact should always be the local reseller; they are able to provide you with local support in your own language. Alternatively, send an email to us directly and we will be happy to help. Use info@callassoftware.com for general questions and support@callasoftware.com for technical inquiries.


Question: I’m experiencing problems when installing or uninstalling software. Where can I get help?

Answer: Your first point of contact should always be the local reseller; they are able to provide you with local support in your own language. Alternatively, send an email to us directly and we will be happy to help. Use info@callassoftware.com for general questions and support@callasoftware.com for technical inquiries.


Question: How can I update my callas software product?

Answer: It’s really easy to update a callas software product – you simply install the new version on top of the old version. As always it's safest to make sure you have a backup before you install new software on a production machine; specifically of the preferences folder where all of your custom profiles are stored.


Question: How do I find out when the new version of my software is available?

Answer: Customers who have a software maintenance agreement (SMA) automatically receive a notification informing them of all version changes for callas software. They can also access detailed information on the changes made in the special SMA area of the callas software web site. Alternatively check our download page; this always lists the latests versions of all products.


Question: I urgently need a particular additional function for a callas software product. What can I do?

Answer: At callas software, we are constantly striving to improve our products. Past experience has shown us that it pays to collaborate with customers on solutions and enhancements to the CLI versions. These functions can be tested on site in real production environments and then integrated into the standard version later on. If you have questions or suggestions, please send an e-mail to technology@callassoftware.com.


Question: Where can I exchange information with other users?

Answer: callas software has a forum where interested users can exchange information about their experiences and specific usage conditions and discuss the integration of callas software into their existing workflows. Click here to visit the forum.

You might also like to visit the Swiss-based site www.hilfdirselbst.ch (German only). It contains prepress forums on the professional use of software for prepress processes, color management, and further processing. Many valuable posts about using our tools in your daily work can be found here.


Question: Is it possible to exchange profiles between different program versions?

Answer: Generally exported profiles are interchangeable within the same program generation (eg pdfToolbox 7.x). Of course, new corrections or checks that have been added in a minor update version (eg pdfToolbox 7.x), are not usable in older versions (eg pdfToolbox 6.x ). As new major versions can include fundamental changes in the profile structure, the profiles have an internal versioning. Therefore, older versions can not import the profiles of newer versions. Since these profile versions can be of interest to integrators and developers, please find the list with versions below:

pdfToolbox versionProfile versionAcrobat version
- 4.0 8.0
4.0 6.0 9.0
4.4 8.0 -
4.5 9.0 10.0
5.0 10.0 -
5.5 11.0 11.0
6.0 12.0 -
7.0 13.0 -


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2. Questions on command-line modules

Question: Can callas software command-line versions also be downloaded directly from the site?

Answer: Yes. On Mac or Windows, download the server version of the product - this will include the CLI module and its documentation. On Linux or Unix platforms, download the CLI version (no server version is available on those platforms).


Question: How do I call the command-line modules?

Answer: You call the command-line modules using a script command. This allows them to be integrated individually even in highly complex workflow systems. Download the time-limited trial version to test this and read the (included) documentation on how to work with the CLI.


Question: Does callas software also offer special project implementation or the integration of one or more CLI modules in a workflow with software such as HELIOS or Switch?

Answer: callas software has an extensive network of partners who can help you with any kind of integration. Send an email to info@callassoftware.com or info@fourpees.com (our sales and marketing partner) and we will be happy to direct your question to the right person.


Question: What is the main advantage of signing up for a software maintenance agreement (SMA)?

Answer: The main advantage of a software maintenance agreement is the fixed, calculable price of the software. A user with an SMA has permanent access to free updates and technical support, enabling secure technical and financial planning for your company.


Question: What is the main advantage of signing up for a software maintenance agreement (SMA)?

Answer: The main advantage of a software maintenance agreement is the fixed, calculable price of the software. A user with an SMA has permanent access to free updates and technical support, enabling secure technical and financial planning for your company.
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3. Questions on pdfToolbox: Warning "Invalid Compact Font"

Question: What does the error message “Corrupt Font. Invalid Compact Font” that arises in Acrobat after creating a preflight or inventory report mean?

Answer: Some 3rd party plug-ins like PitStop Professional are incompatible with the method to create the preflight or inventory report. Currently this error message can only be avoided by deactivating the 3rd party plug-in.
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4. Questions on archiving PDF print files with PDF/A and PDF/X

Question: In which ISO format is print data best archived?

Answer: As PDF/A is rather emphatic and distinctive about assuring long-term reproducibility or reutilization of PDFs, the print data that is sent to the printers as PDF/X must best be created as PDF/A too, so that archiving is possible immediately without additional processing.

Question: I already have printable PDF/X files. Will I face problems when converting to PDF/A?

Answer: No, conversion takes place mostly without problem – basically, every PDF/X-1a or PDF/X-3 file must also be saved simultaneously as PDF/A-1b.

Question: What are the differences between PDF/A and PDF/X?

Answer: The two standards PDF/X and PDF/A were developed by ISO to be largely compatible with each other – i.e. a PDF file can be simultaneously compliant with PDF/A and PDF/X.

Detailed technical information on the differences between PDF/A and PDF/X is given here...



Question: Can a PDF/A file be simultaneously compliant with PDF/X and vice-versa?

Answer: Yes, both PDF/X and PDF/A have been intentionally developed by ISO in such a way that a PDF document can conform to both standards at the same time. Thus, although typographical aspects – e.g. information on trappings – are not explicitly demanded by the PDF/A standard, they are not forbidden either. PDF/A also doesn’t forbid creation of PDFs so that they will be considered as production-compatible in the graphics industry. In detail, divergences between PDF/A and PDF/X have indeed resulted from the development chronology of standards. In practice, these minor differences seldom pose a problem and conversions ought to be smooth.

Question: How do you generate a simultaneous PDF/A & PDF/X compliant file?

Answer: With the Preflight functions developed by callas software, like in Adobe Acrobat 8 Professional, a simultaneous PDF/X and PDF/A compliant document can be created from a PDF in a single step – simply set up a Preflight profile where both standards can be activated in the “Convert to PDF/X or PDF/A” menu. You can try out the whole thing using Acrobat Professional 8 – the Preflight functions available there offer various options, e.g. save a PDF/A as PDF/X; or save a PDF as PDF/A and as PDF/X in one go. With the correction options available in Preflight you can also sort out some problems through appropriate correction.

On the contrary, Adobe Acrobat Professional 7 offers PDF/A support only to some extent, as the PDF/A standard was not yet fully ready during the development of Acrobat 7. If automatable solutions are demanded, the pdfInspektor CLI and pdfaPilot CLI from callas software can help: Both command-line modules are based exactly on the same source code as the Preflight function in Acrobat, however run unmanned in Server mode, alternately on Windows, Mac OS X, Linux or Sun. They can be integrated in Helios or Switch environments without any problem.
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8. Installing on MacOS

Question: During installation, I got a warning that the developer cannot be confirmed?

Answer: callas software is a registered developer at Apple for MacOS. Due to some quite strict security settings starting with MacOS 10.7 only software downloaded from the Mac App Store can be installed directly. Just change the system settings in “Security and Privacy” to “Mac App Store and identified developers” before installing a callas software product. You can set it back to “Mac App Store” after the installation of course.

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