When Ghostscript code is executed it will load the dll into memory. This dll won't be unloaded until your process exits. I am guessing that you are keeping the test execution running. You can turn it of here:
p.s. What does the f stand for in your prifate members?
Test -> Test Settings -> Keep Test Execution Engine Running. I also need to do this with my Magick.NET tests because I disable something that cannot be restored.p.s. What does the f stand for in your prifate members?