Malwarebytes Anti-Malware fails to load DDE driver (rootkit scanner)

Malwarebytes Anti-Malware version 2 randomly popped up a message saying that it was unable to load the rootkit scanner driver DDE and suggesting a reboot of the system. Rebooting did not clear the error. There were no indications of any problem loading drivers in the ntbtlog.txt file. Disabling other anti-virus products (Avast, Emisoft) on the machine did not clear the error either, thus demonstrating that there was no interaction between the products that was causing the problem. After noting the Malwarebytes license details, program configuration and exclusion lists, Malwarebytes Anti-Malware was completely removed (uninstalled), the system was rebooted and Ccleaner used to clear out the registry. Malwarebytes Anti-Malware was then downloaded from the official site and installed with default options. The license details were entered, the program was configured as before and the exclusion lists were restored. This cleared the problem. Simply a classic case of uninstall and reinstall. I like the easy ones.