Qoppa’s PDF Editor Now Available on NixOS Linux Distribution

Our fully-featured PDF editor PDF Studio is now available on NixOS Linux, easy to download and install as a nix package. NixOS Software helps users conserve more disk space. Now our users have another Linux distribution to use our easy-to-use PDF software to create, edit, markup, annotate, and digitally sign PDFs. We want to thank […]

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X11GraphicsEnvironment error when installing PDF Studio as root on Linux

Q: When I’m installing PDF Studio as root, there’s an error message “Could not initialize class sun.awt.X11GraphicsEnvironment”. How can I solve this issue? A: On some Linux distros such as CentOS,  the user environment variables including the display may not be passed to root. The error message you will see in the console is the […]

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License Key Management for Volume (Multi Users / Multi Key) Licenses

Q: Do you offer any license management tools for volume (Multi Users / Multi Key) installations to manage user / employee registrations? A: Yes, for customers with over 10 licenses who subscribed to a Subscription or Upgrade Plan can access PDF Studio License Key Portal. This feature is currently only available by request. To receive […]

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MacOS: Invalid Checksum Error on Update Install

Q: When I tried to update PDF Studio to the latest version on macOS big Sur, I received an “Invalid checksum” error message. How can I update to the latest version? A: Recent macOS changes require an application to be notarized with a developer certificate before it can be installed. This notarization process modifies the […]

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Where can I find PDF Studio Installer (install4j) Logs?

 Q: I’m running into some errors when trying to install PDF Studio. How can I resolve this? A: If PDF Studio’s installer fails on your machine, Email PDF Studio support team and make sure sure to include the log files from our installer install4j. By looking at the logs, our team might be able to […]

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PDF Studio installer hangs on license agreement dialog

Q: When I start installing PDF Studio, it hangs on the license agreement dialog and does not let me agree and continue. How can I solve this issue? A: It is a known issue with our  Mac installer  which happens only under specific circumstances that we are still trying to identify. We had a few users […]

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Windows Active Directory Group Policy and User Home Folder

When using Active Directory group policy on Windows and the environment variables for UserProfile and HomeDrive are different, PDF Studio will use the UserProfile variable as PDF Studio “user home folder”, which is where user preferences and settings for PDF Studio will be stored. If you would like to use a different folder, you can […]

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The installer for PDF Studio Standard and PDF Studio Pro

Q: When I click on the link it only takes me to a download of PDF Studio instead of PDF Studio PRO which is what I purchased.  Can you send a new link or instructions how to get the “PRO” version?  A:  PDF Studio uses the same application installer for both edition of PDF Studio (Standard and […]

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Add a User to my license

Q: I have purchased a user license and would like to add a second user to my existing license instead of purchasing a new license key. Is this possible? A: Yes, you can. Starting in PDF Studio 2018.3.1, you can use our license key management tool to add users to your license key. Click Help tab -> […]

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