I've come across this issue many times. It's actually an intermittent issue; so just continue editing/saving and the problem will go away (and you can search again).
I use the guide and keep plenty of notes for using Linux, My file has reach about 60meg+
it had crashed before and after a new start in a file it worked, maybe some script or code saved in notes did something or size is too big then.
since a new start it is bigger and worked still then one day again it started to crash on a Full search. now it only will search a single page or crash on a global search.
Unable to Search globally anymore.
is there a limit to file size? page size? or data inserted?
is it just the recent release maybe? I have both portable and installed(2.0) versions both act the same way now.
I have a previous save at 54meg that will search OK. I was just hoping not to have to be limited on search limit of my file size.
This is work related and unable to release data as proprietary. I also do use the hyper links at times so not too many, I did an export to text and end up with about 600 pages of email notes, pdf notes, script info, commands to run, links are nodes,pages,doc.pdfs,urls, I have colored text also for pages and background of text at times, also icons for some books in my left pane.
Any ideas or help or a bug to clear up someday?