Created attachment 126389 [details] Example table to reproduce error +++ This bug was initially created as a clone of Bug #100764 +++ When attempting to delete a row, LibreOffice calc gives error message; LibreOffice 5.1 - Fatal Error multi_type_vector::position#1477:block position not found! (logical pos=18446744073709551605, block size=6, logical size=1048576) After changing content of cell B4 from "=A4" to "=A4-B22" and deleting row 5, LibreOffice popped up with the upper error message an crashed when I click the OK button in this error message. LibreOffice did not crash when I change cell B4 to "=SUM(A4;B21*-1)". Enable/Disable OpenCL has no effects. System here is Fedora 24 (64-bit), LibreOffice 5.1.5.1 build ID: 5.1.5.1-1.fc24
Rolling back to Version 5.1.3.2 Build-ID 5.1.3.2-6.fc24 resolve the issue.
The fix for bug 100764 is not yet in 5.1.5.1. Please test with 5.1.5.2, which will be out in a few days (around Thursday) here: http://dev-builds.libreoffice.org/pre-releases/ I tested the example with 5.2.0.3 (which was released a few days ago, and has the fix), and got no fatal error, while I could reproduce the issue with 5.1.4.2. The error should be gone in 5.1.5.2. *** This bug has been marked as a duplicate of bug 100764 ***