Yeah, it’s a pretty useless error message. I have a little checklist of steps to do based on whether it comes up in the catalog page view or the print page. The first is usually a file size, number of nodes or complexity of the design so I’ll look at those items including breaking a design into multiple files (something I’m fairly used to doing because of limitations on the K40 or Redsail).
The second is usually due to the same issues as the first or due to the number and complexity of the operations being performed. In this case I will do the job in multiple steps by ignoring operations and running it and then ignoring what I did the first time and process the next operations. If that doesn’t work I find that for engraves it’s either the LPI setting (lower it to get past the error) or for bitmaps, it’s the source resolution - I’ll resample it in the design software to 600 or even 300dpi.
I’ve only had a single project I couldn’t find a way to deal with.