Access violation while comparing files

I have a file A and I want to compare it with B, C, D, etc. I do it sequentially, keeping A open and closing the other files after the comparison results. But from time to time, when trying to open a file -let's say F- to compare, the program crashes. It doesn't depend on the file trying to open, and if I terminate and launch the program again, I can compare A and F with no problem.

Furthermore, if I press the 'Mail log' button, I get a popup with a Index is out of range message.

Exception description:

Access violation at address in module '.exe'. Read of address .

Exception class: EAccessViolation
Exception address:
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Stack list, generated 26/04/2016 14:14:47

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Thank you for your support!
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But please don't put such logs into the forum.
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Nobody here is interested in such long logs.
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(See forum.pspad.com)
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Send them to the Author Jan by mail.
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For mail address see PSPad > Help > About
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Also please describe what you have done right before
and how often that error occurs.
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Thanks
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Program : C:\Program Files\PSPad editor\PSPad.exe 4.6.0 (2700)
System : Windows 10 Professional x32, Version: 6.2, Build: 23F0,
Processor: Intel, Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz, 3500 MHz MMX
Display : 1680x1050 pixels, 32 bpp
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Active Controls Hierarchy:
TPSSynEdit ""
TfChildEdit ""
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Edited 1 time(s). Last edit at 2016-05-29 16:43 by Stefan.