I installed BI Publisher Desktop 18.104.22.168.0. When I open Word, initially the BI Publisher tab is not present and I get an error pop-up that says "startup_main: Could not load file or assembly 'TBXDOUtilities, Version=22.214.171.124." When I click on the 'Ok' on the error popup Word finishes opening and it now has the BI Publisher tab. If I select that tab, however, most of the options are greyed out and inoperable, and the remaining options do not actually initiate any action when selected. When I check via Windows Explorer the TBXDOUtilities file appears to be in the folder 'C:\Windows\Microsoft.NET\assembly\GAC_MSIL. Tried an uninstall/reinstall but to no avail. Any suggestions?
I ran into the same error today after installing BI Publisher Desktop 126.96.36.199 that is delivered with PeopleTools 8.53.
I managed to solve it by running Windows Update on Windows Server 2008 and installing a couple of hundred windows updates. After it finished installing all windows and office updates, I uninstalled BI Publisher Desktop and re-installed it.
After this the error disappeared and I was able to use BI Publisher Desktop.
Probably missing some pathes for .Net.
Thought I would share my findings.