I had a similar error/message back on the 18th of November. Just thought I would share…though I am not sure it would help. It just seems similar.
I found this… http://discourse.weather-watch.com/p/472500 …but it did not help at this point (but soon did).
I then went into the Cormod0 file & observed the “Null” & thought this should not be there. So I just deleted the “Null(s)” & saved the file upon exiting. Then opened wxsimlite, changed the “date” per the guidance the the above thread & to my surprise…this fixed my error.
No errors & it’s been running fine since.
I am curious how the “Nulls” appear to be affecting others & where is it coming from?
tbrasel