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  4. Error finding FTD2XX.DLL

PROBLEM: Programs using the FTDI Driver for the XPV interfaces may report and error that the FTD2XX.DLL cannot be found or has a problem. This may be due to the file not being installed in the required Windows folders.

SOLUTION: Check to ensure that there is a copy of the dynamic link library FTD2XX.DLL in both these folders:
C:\Windows\SysWOW64
C:\Windows\System32

FTD2XX.DLL can be downloaded from HERE

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