Problems installing elefront on new computer with actual Rhino

Hey there , i got a problem installing the elefront plugin on a new installed computer with rhino8
on another laptop the same system is running without any problems Rhino8 and Elefront 318.
The Problem is when i install it in Grasshopper it is automatically installed also in Rhino8 and after starting rhino again i need to choose which elefront i will use , but when i choose one , it doesnt work also and the tools like Bake are displayed white .

thanks for your help