When using .Net assembly via CLR bridge, the dll remains loaded by tcHostingProcess. That unallow to recompile the assembly or to restart tests with freshly loaded assembly (think singleton and static variable).
Currently, we must either kill tcHostingProcess (which isn't started again on next test run) or to close completly TestComplete and reopen it.
A Release button in CLR bridge, which will unload the assembly, will solve theses issues.