I was getting a message "unable to load directxupdatemanager.dll" at windows startup, and Alleg won't generate me a key.
Between then and now the only thing I mucked with was re-installing dirext from the microsoft website's distributable.
Not sure what to do at this point, I tried to message you but I don't know your main
I am not ignorant of the rules of the helpline, and I can post more system info if required but this specific scenario may not warrant it at this time.