I was trying the trail version of confluence and it fails with "an internal error occurred (error code: 34)" with a reference to the log file.
The contents of the log file are:
Started executable C:\Documents and Settings\andrew.chan\Desktop\atlassian-confluence-5.0.2-x32.exe at Wed Mar 13 15:30:11 2013
number of sections: 5
size of optional headers: 224
resSectionTableStart: 536
rawDataSize: 126464, rawDataOffset: 200704
change working directory to C:\Documents and Settings\andrew.chan\Desktop
single instance mode
semaphore name c:_documents and settings_andrew.chan_desktop_atlassian-confluence-5.0.2-x32.exe, code 0, value 00000044
Init done
Starting work
number of sections: 5
size of optional headers: 224
resSectionTableStart: 536
rawDataSize: 126464, rawDataOffset: 200704
starting at 327168
verifying integrity length 220338130
ERROR: check ReadFile failed 0 183 177629269