We believe this issue can occur when Ubuntu's desktop has not refreshed itself to be fully aware of the shortcut links our installer will place there.
To resolve the issue, press F5 and that should refresh the desktop and correct the shortcuts. If the problem persists, right-click on the shortcut and ensure that "Allow executing file as program" in the Permissions tab is checked and save.
Need more help?Contact CCDC Support online, or by email.
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