We have just released SimpleLists 126.96.36.199c which contains multiple fixes for problems that came to light last weeks: One of the major issues was that SimpleLists 1.6 caused a major cleanup of code, but this broke also some minor things when running SimpleLists on a Windows platform. This is all fixed now, among many other fixes.
Bugfixes in 188.8.131.52c
Besides Windows compatibility, several other issues were fixed: SEF-URLs from categories-overviews were not working, as well as category parameters on those pages. Also in the backend, various things are repaired: The changelog can be found here.
To migrate SimpleLists from Joomla! 1.5 to Joomla! 2.5, we now also offer a jUpgrade XML-file - found in the download-section under SimpleLists Addons. Instructions are available there as well.
Support for Joomla! 1.5
Very important to note is that we will be dropping support for Joomla! 1.5. The next SimpleLists version is 184.108.40.206 which will appear in May 2012 (next month). But this will be the final release in which we will support SimpleLists. After that, version 220.127.116.11 is planned for July, and that version will not be available anymore for Joomla! 1.5. We of course advise everybody to upgrade to Joomla! 2.5 to stay compatible with extensions like these.