Environment: Windows XP (32bit) SP3 (2 different computers)
I installed (upgraded) from Libre Office 3.3.0 to 3.3.1RC1 (multi) and I chose English as UI default language.
In both computers I had these extensions installed beside to ALL extensions included with LibreOffice 3.3.1RC1 package and beside some dictionaries (French, English, Spanish, Brazilian, Italian, German-DE, German-AT, German-CH) also given with LibreOffice:
* Alba 1.4.6
* Alternative Searching 1.3.2
* BaseTools 0.0.5
* CLC09 1.5.3
* ConvertTextToNumber 1.4.0
* DataForm 1.0.3
* Diagrams 1.1.0
* MyTXTCleaner 1.1.2
* Pagination 1.3.10
* ParaDTP 0.8.3
* Switchboard 1.2.0
* Visible Bookmarks 1.2.5
When I click on the button "Check for Updates" of the Extension Manager, LibreOffice 3.3.1RC1 crashes and exit.
Please note that performing the same operation on another computer running Windows7 64bitthere is no crash and an upgrade to VisibleBookmarks 1.2.6 is found and installed correctly.
I don't know if the cause of the crash in XP depends on this specific extension or to the upgrade process in general.
Anyway, if I download VisibleBookmarks 1.2.6 from the repository site (not directly inside LibreOffice) and I perform the upgrade by using the "Add" button of the ExtensionManager loading the new version from my HD also LibreOffice running under WindowsXP is successful in updating this extension.
*** This bug has been marked as a duplicate of bug 33701 ***