The plgin works,
however one minor setback. De cdfacl.php contains a Joomla-version check That's fine but if Joomla itself is updated (i.e. from 1.5.10 to 1.5.11) the user has to manually update the string for the version-check in the file cdfacl.php. Not very handy.

works like a charm. Using it to add/update 500 users from Excel to Joomla for a HRM-system.

just downloaded and tried on one of my sites.
Installed Joomla 1.5.10, installed mtwmigrator.
Adapted the settings to connect to the old db and Go !
2 minutes later and it was running for 99% of the data. Just had to handcopy my downloadables (pdf,doc etc) to the right DocMan subdir and handcopy the images i had placed in ../images/stories from the old site to the new site.
Once that was done everything is 100%. And all in just 15 minutes.
Thanks a lot !! Now i can migrate all of the other 1.0.x sites with no problem.

looks ok.
However the tool is still based on Joomla 1.0.13, Current version is not well recognized.
Also : it did not recognize the setting Register Globals emulation off which I already had set to off.