Runtime error...

My interprise use a UNIX mainform for a instrumentation process control. The control use the FOXBORO INVENSYS system and they don�t gonna solve the problem the run time error. The run time error happen without logic explication. When everything it�s run perfectely and happenly appears the run time library error. The FOXBORO INVENSYS couldn�t find the reason of the problem. They do everything and nothing better...
The run time library error make all system Foxboro Invensys stop and lost the process control. It�s a risk so greatest!!!
Like we use the UNIX operational system together the WINDOWS NT, someone saw a same case this way? Will be the problem by UNIX operational system?

Please post the exact text of the error message that you see.

Also post your version on SunOS. You can get this with "uname -a".