I dont recall ever seeing a report for this particular issue in calibre, only one where simply opening the File dialog causes a crash.
I'd guess this is almost certainly caused by a shell extension incompatibility. Windows has this crazy design where shell extensions are arbitrary executable code that is injected into any process that uses a windows standard file dialog. Common cause of incompatibility is when the shell extension uses a DLL that the host application also uses, but in an incompatible version.
You can investigate which extension is causing the problem relatively painlessly by using the technique described in the last bullet point here:
https://manual.calibre-ebook.com/faq...s-occasionally