windows 7 x64 - VB.NET SplashScreen "Program stopped working" -

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environment:

  • visual basic (version 2008)
  • .net framework 3.5
  • windows 7 64 bits

problem:

i have program next start code, during years worked.

public class splashfrm  private withevents dosomework validatecls private sub splashfrm_load(byval sender object, byval e system.eventargs) handles me.load     me.show()           dosomework = new validatecls     application.doevents()       dosomework.doworks() end sub private sub react() handles dosomework.workfinished     loginfrm.show()     me.close() end sub  end class   public class validatecls     public event workfinished()   sub doworks()         addhandler system.appdomain.currentdomain.unhandledexception, addressof onunhandledexception         try             'here code validate licenses.           'i can not put code, works fine because can see validating ok.         catch ex exception             saveerror("validatecls-1", ex.tostring)             end         end try         raiseevent workfinished()     end sub  private sub onunhandledexception(byval sender object, byval e unhandledexceptioneventargs)     try         handleunhandledexception(e.exceptionobject)     catch ex exception      end try end sub  private sub handleunhandledexception(byval o object)     if o nothing return     try         dim e exception = directcast(o, exception)         messagebox.show(e.stacktrace, "unhandled exception.")     catch ex exception         messagebox.show(ex.message, "unhandled exception.")             application.exit()     end try end sub  end class

but last week, in computers windows 7 64 bits, sudddenly crashes: "program stopped working":

description: stopped working

problem event name: appcrash

application name: nameapp.exe

application version: 1.0.5116

application timestamp: 52c6d693

fault module name: kernelbase.dll

fault module version: 6.1.7601.18229

fault module timestamp: 51fb1116

exception code: e053534f

exception offset: 0000c41f

the code inside "sub doworks()" working because checked validates license. error inside or after: raiseevent workfinished(), because loginform not showed.

what wrong?


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