Thanks for letting us know about this issue. We are getting similar reports recently so we are investigating this. So it'd be really nice if you could provide some more information.
Which version of Windows are you using?
Could you zip the contents of your C:\Program Files (x86)\Telerik\JustDecompile and C:\Users\yovtchev\AppData\Roaming\JustDecompile folders and mail them to tsviatko.yovtchev at telerik.com?
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