When on Ubuntu 11.10 using LibreOffice Calc 3.4.4 I have several spreadsheets.
Most contain only 1 to 3 sheets and there is almost no calculations depending on
info in another sheet within that workbook. On these I have been having no
trouble.


On 12.04 using Calc 3.5.2.2 I have a workbook spanning years 2010, 2011 and
2012. It consist of 19 sheets and uses info in other sheets in the same
workbook. But none chases each others tail. When I try to load it I get this
error

Read-error.
An unknown error has occurred.

Taking that spreadsheet into Calc 3.4.4, saving as an Excel 2003 xls file, load
it into 3.5.2.2 and save as an ods file. That works and I'm back in business.

Question: Has anyone else seen this problem? How do I report it to the powers to
be?