Ready API 1.8 LoadUI freezing during load test

When running a load test, the tool seems to freeze then give an "Out of Memory" error then complains I do not have a license (which I do) and exits. So, I went into the .bat files and updated the heap size to 3027m. This did not remedy the situation. Note: I have also cleaned up the .readyapi test results folder as well. I need assistance as soon as possible. Thanks!