Unset variable causes crash but not set in any generated code

I am using the SAM SDK (ver. 186) to run a basic model via the JNI in a Java web servlet environment (wind/levpartflip with default parameters). However, I cannot get it to run; it crashes with the following notice message form the SAM SDK:



Furthermore, when examining generated code/input from SAM itself (2017.9.5) running a similar model, I see no sign of a 'gen' variable. I thus find it impossible to intuit what this variable is used for, how it should be set, or why it must be set.

Any guidance would be appreciated.

Edit: Only a few minutes after completing this post, I tried running the SAM simulation again and it, for whatever reason and without any changes to code or data, works. Very bizarre. I'll update again if I encounter the same issue.

I see. The issue, then, was likely not running the performance module before the finance module. Thank you for the reply.