Windows NT Client C:\ORANT\BIN problem

We run an Oracle application on v 7.3.3.
The client front end is located on a Windows NT4 workstation.
The workstation halts with Dr Watson errors pointing to the rwrbe60.exe program that is located in C:\ORANT\BIN.

Has anybody got any ideas how we can resolve this?

Thanks for your time.

Could you check the size of executable on another terminal client if you have one and see both are same. For somereason your client executable is not working. try reinstalling it or copying from somewhere if possible and not very big in size.