Program error pointing to Java error

Help me Experts!
I was using an office in-house built program and had trouble using it one time when I encountered this error upon starting said program. The error message seemed to display a Java error but this is so technical for me since I am just a user. I was just wondering that it was working fine yesterday but now I cannot use it. I know I have Java installed on my PC.
Please give advice.
Error Message:

Startup Error
An error has occurred during startup
java.lang.NullPointerException
