%SystemDrive%\Program Files\Corel\CorelDRAW Graphics Suite X5\Programs Rename the existing PsiClient.dll PsiClient.bak or delete it. Paste the copied PSIKey_2.dll into this folder and rename it to PsiClient.dll Delete Registry Entry (Optional) and navigate to:
If the above methods don't work for you, you can try using a third-party tool to remove ProtexisCmd. One popular option is the Corel X5 ProtexisCmd Remover tool. corel x5 remove protexiscmd free