Grasshopper crashes with ASTools plug-in

Hello,

we have been happily using Rhino+Grasshopper+ASTools plugin until yesterday.

I know that ASTools plugin is old and unsupported, but very needed for us, as it provides functionality, that can be probably not achieved with any other tools of Rhino and/or Grasshopper.

The problem is, that from yesterday, the Grasshopper instantly crashes on inicialization when ASTools plugin is loading.

There is no error message, no report, just immidiate and hard both GH and Rhino crash.

We know it is not HW dependent (crashing on many PCs with different HW) and not RH version dependent (crashing on Rh7.04, 7.13 and 7.15).

In the same time, there was no Windows or Rhino update yesterday, so it is mystery for us.

Is there something, how we can come to know, what is happening? Like some tuning tool that shows what is happening in GH step-by-step?

Best regards
Martin