Urgent. Help me to restore my data

Hello, this is my first time in newsgroups, so please forgive me for nay mistakes. I have the following installation Informix OnLine WS 7.22.TC1 MS-Windows NT 4. Recently (27 of December) i upgraded the NT with Service Pack 4, and after that every time i tried to start the service "Informix OnLine Message Service" i had the message "Error 2140 Internal NT Error". Fortunatelly i had a backup with "ontape -s -L0" just 30 minutes before the crash. After several discussions ant experiments with my local technical support from Informix, they tould me that 7.22 propably does not work Service Pack 4. So, i reinstalled NT with Service Pack 3 and after that i installed Informix, and i had an Informix ready to work. I tried then to get my data using "ontape -r". Because it is full restore i did it as cold restore, and i had a message from ontape "Cannot fork server connection". Now, my local technical support has no ideas and i have my company not working for the three of the most critical days of the year. If someone has any idea about this problem, please let me know.