Send to Hexagon freezes (DS 4.10.0.123 to Hex 2.5.2.109 Win64)

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As title says: I'm on Win 64, using Studio 4.10.0.123

 

I just re-downloaded latest release of Hexagon via DIM (2.5.2.109) and it launches fine when I just open it.

But the bridge from Studio is broken. The Hexagon application launches, and I get the welcome screen and the entire UI - then it's adding "(Not Responding)" in the application title bar, and eventually, the application stops and Windows gives me the prompt to ask if I want to shut down or wait for the program to respond.

My scene gontains simply a cube, base resolution, no subdivision.

Once Hexagon is shut down, it will not launch via bridge at all anymore unless I do a restart. But it does launch from windows.