Pro Digital Astroflat and Starspikes

[brenski]

Hi

really hoping someone with knowledge of the above can help.

StarSpikes Pro and AstroFlat have decided they don't want to work anymore.

System: Windows 10 home 64-bit, 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz   2.42 GHz. 8gb ram, SSD HDD
Photoshop CS6, Atsroflat 1.4.11 & Starspikes Pro 4.6.12

Both filters load in Photoshop CS6, and even apply the effects to stars - in preview mode, but the minute I click OK it crashes Photoshop completely.

This is a new occurrence and everything was fine until this weekend. No changes to PShop or Astroflat/Starspikes had taken place.
I have this installed on more than one PC at home, but completely puzzled why the plugins have suddenly stopped working on this one machine.

I've even tried reinstalling both CS6 and the plugins - but still the same outcome on the one device. my other devices are fine. wondering if i need to buy an additional license to fix this?

any help/advice appreciated