We resolved this issue in version 7.71.9, patch 2.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.

Alternative solution for version 7.70.638 or higher:

Try each of the following steps until the issue is resolved:

    For other versions:

    Have the user who can successfully access Print checks exit and sign out of The Financial Edge.