From the looks of that error, it looks like one of the node modules did not install correctly. You can reset the installation process by erasing the following folders:
Telerik Mobile Testing/bin/node_modules
Telerik Mobile Testing/bin/cli/node_modules
After doing this, running start_win.cmd should re-download all related node modules, including the one that failed to load properly.
Another thing you can try is to manually install the modules by going to F:\Progs\Telerik Mobile Testing\bin\ folder and typing "npm install".
Let me know if this helps.
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