Quote:
Originally Posted by bob_bookworm
It's a 11-book file [Story of Civilization by Will Durant], and I would be surprised if it's depending on either RAM or storing capacity because it is a Win10 64bit new and potent machine.
The same problem in both Calibre 2.50 and 2.51.
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Which is why I said 'memory limit' instead of 'running out of memory'. I suspect there's a limit somewhere in Calibre or Python (one that seemed a reasonable assumption to the writer at the time) that is being exceeded.
Quote:
Originally Posted by bob_bookworm
I am trying to split the file into smaller epub files because trying to convert the big file from epub to mobi is getting a similar error message.
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Which further suggests that Calibre (or Python) has some internal limitation, unfortunately.
If you run Calibre in debug mode (under Calibre's Preferences drop down), capture a log of the error message and post it here, that may help.