TextPad crashes when clciking on Document Class in options

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When attempting to view a document class in options, program crashes.

Have attempted uninstall and reinstall with deleting the textpad 6 folder and appdata\helios but same thing

In case it is relevant, On first run of TextPad, receive error:
"Cannot copy file: Cannot read form the source file or disk."

I think this may be related to the fact that my users home folder is username.domain, but not certain.

Have tested with version 6.0.0 and 6.1.3, same behavior

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Some more information:

I modified my Temp and Tmp variables to c:\Temp and ununstalled/reinstalled and no longer got the copy file error on first startup, however the program still crashes if I click any document class