Unexpected Error LibreOffice Crashes

Try to open recently saved Calc document - ODS.
Box displays saying Unexpected error Libre Office Crashes.
Says will recover file and give it name of Untitled 1.
Says recovered file successfully.
Try to open file Untitled1 which happens but it is blank.

Maybe unrelated, but it creates a file ~lock original file name.
Using or deleting this file changes nothing.

Original file has size of 387K which is approximate size of file before most recent save.
Recovery file Untitled1 only has 8K size