SAS EG dataset does not exist but I just ran analysis on it

[Krysia24]

I have a program that was running fine for weeks, no changes made to it.

Today, I ran the program and it does the analysis (aka works fine, no errors). I then decide to add some lines of code for additional analysis. Suddently the dataset that I just worked off of "does not exist." I restarted the whole program and it ran fine. This time rather than adding a new line of code, I just re-ran one small piece of code that had already existed {after running the whole program once in full}. Again, the dataset does not exist. Even more interesting, since I am using my work library, none of progressions of the dataset are in there anymore. (Throughout the code, I go through various iterations of the dataset: 1,2,3,4,etc. and they do not seem to be staying in the work folder?) 

Please let me know if additional details would be helpful... 

[ballardw]

No code, no log => no diagnosis.

I suspect that your project is creating the dataset and possibly removing or renaming the dataset. But we would need to see an entire log to trace what's going on.