Thanks for your feedback. It is very interesting that it works for you. Which nexus versions are you running? Are you running as embedded server? We run nexus as embedded server in our application.
1) I did run Rad Studio 10.2.2, and now just installed 10.2.3 with Nexus version 4.1302.
2) It happens when launching the application. I get the following error in a simple test application:
First chance exception at $006BBD75. Exception class $C0000005 with message 'access violation at 0x006bbd75: write of address 0x0088c0d4'. Process Project1.exe (9484)