I ran vsdiff from the cmdline to compare two folders.
I changed the diff options and hit refresh
It prompted "Refresh modified files only?"
I click "No", then I get the error below.
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Slick-C Error
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file=diffmf.ex offset=134
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OK
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I hit refresh again, and got a slightly different error.
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Slick-C Error
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Control ctlleft referenced but does not exist
file=diffmf.ex offset=134
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OK
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Hitting "YES" instead of no, gets me:
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Slick-C Error
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Invalid argument
file=diffmf.ex offset=23720
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OK
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And the diff window is now blank - showing no files at all.