Yes, the InCD clean tool, available here:
http://www.nero.com/en/InCD_Clean_Tool.html should allow hundred percent success in installing the latest version.
About InCD.exe crashing, I do not remember of a plextor specific issue, however I do expect this crash to go away as I do not see on Microsoft Windows Error Reporting any InCD.exe crash in the new version. If it does not help and still crash, let me know and I'll provide step by step instruction how to gather a crash dump with Dr Watson so we can analyze your dump and fix the issue asap.