Great thanks, now it worked!
Also other great news: With this I was able to fix my problem.
Here is the updated PTX-Code:
.version 8.5 // changed from 7.1 to 8.5
.target sm_61
.address_size 64
.visible .entry ExpressionProcessing(
.param .u64 param_1) // changed from .u32 to u.64
{
.reg .b64 %parameter<1>; // changed from .u32 to .b64
.reg .b64 %i<1>; // changed from .u32 to .b64
ld.param.u64 %i0, [param_1]; // changed from .u32 to .b64
cvta.to.global.u64 %parameter0, %i0; // changed from .u32 to .b64
st.global.f32 [%parameter0], 10.0;
ret;
}
With these changes I was also able to get my more complicated PTX code running again!
Thank you guys for helping me out!