How to install Touch IT 5.8 in WinPE 5.1 64-bit

Hi - I've tried using 'touchitPE_2.0.exe' to install Touch IT 5.8 into a 64-bit instance of WinPE 5.1 but it fails with 'Unable to rename the Touch-It runtime!'. Is there an updated WinPE installer I should be using instead?

Alternatively are there manual instructions on how to get any version of Touch IT installed into WinPE 5.1 64-bit?

Please help...

I didn't find the right solution from the Internet.
References
http://chessware.ch/forum/viewtopic.php?f=6&t=202
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