being offline and out of hte loop for a few days has left me a little confused as to what exactly the imcompatibility is ... could someone open an issue summarizing the problem and mark it fix for 1.3 .. that way we'll have a reminder to either get a fix in, or document the hell out of it as a known incompatibility (which would suggest 1.3 be renamed 2.0, but i'm not sure how neccessary that is without a better understanding of how bad the incompatibility is)
To the best of my knowledge, the problem Mike ran into is now fixed in trunk.
The basis issue was that the deprecation handling that Henri built into SOLR-215 for TokenFilterFactory and BaseTokenizerFactory worked if an existing custom XXXFactory did not extend the BaseXXXFactory since the BaseXXXFactory did not call the now deprecated init(Map<String,String> args) method.
I will resolve SOLR-215 now and any problems that arise from it should get their own new issue.
ryan
