NRF52 Recovery Fails

Hi,

I try the last days very often to Recover my NRF52 Chips on NRFGO Studio 1.21.2.10.

Error: Unable to find or open the JLinkARM dll, Unknown Error.

I reinstall the Software many Times, set Regedit InstallPath.. Following other Solutions. but it would Work only 1 Time..

Now, i have a curious Trick.. i set the Chip in Recover Window to NRF51 and Recovery is Successfull with unknown Error.. Set on NRF52 Errors Again.

I Think its a Bug?