"javactivex_xx.exe" is executable file used for displaying flash content via Flash ActiveX
The exe file is extracted to temporary location and then executed.
The message says it cannot be accessed. So the reason may be:
1) Temp file path was not recognized correctly
2) File was not extracted correctly
3) File cannot be executed from the location for some reasons, that might be an antivirus
software is blocking it (false positive) or something else
Here is the critical part of the JavactiveX library:
See the line File exeFile = new File(... and later.
(for someone who wants to fix it. I don't have a clue where the problem is)
Maybe there's problem with bitness of the Windows vs Java (32/64 bit) ?