I just got it and tried launching by clicking on the EXE and I get the message:
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Error
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Couldn't start:
"D:\Keep\VR\TestHMD\testhmd-win-stable_1_1b_Framerate\ROV_Test_Beta/Binaries/Win64/ROV_Test_Beta.exe" ROV_Test_Beta
CreateProcess() returned 2.
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OK
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Is there a secret? I tried the 1_1a and get a similar message.