Error message when inserting rows

Hello,

I am trying to use the "insert rows above" function to insert around 70 rows at a time.

I keep getting the following error: "Filled cells cannot be shifted beyond the sheet." Closing the sheet and program and re-opening does not resolve the issue.

Spreadsheet is not very big and there appears to be thousands of rows available.

LibreOffice: Version: 4.4.5.2
Build ID: a22f674fd25a3b6f45bdebf25400ed2adff0ff99
Locale: en_US

Windows 8.1

Any ideas?

Would that insertion push your sheet to more than 1M rows?

Ctrl+End jumps to the last cell which is the bottom-right corner of the
sheet's used range.
There you might find some orphane data which would be pushed beyonds the
sheet border.

Control End worked great. Found invisible stuff way at the end of the sheet. Thank-you!