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3.6.13 crashes with a runtime error in firefox.exe, gives an R6034 message.

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popup window after loading Firefox:

Runtime Error!

Program: C:\ProgramFiles\Mozilla Firefox\firefox.exe

R6034 An application has made an attempt to load the C runtime library incorrectly. Please contact the application's support team for more information.

popup window after loading Firefox: Runtime Error! Program: C:\ProgramFiles\Mozilla Firefox\firefox.exe R6034 An application has made an attempt to load the C runtime library incorrectly. Please contact the application's support team for more information.

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