Re: .alt classes not recognised
Obviously these themes are at fault in as much as there were changes to the approach that zebra striping took the majority of the changes were in core files which you should have in 1.2.5.2 but also there were changes made to theme files which is always likely to be an issue where non default themes are used as you will need to be aware of changes or wait for the theme author to update.
The table that lives in the forum directory is missing a class you need to go through all tables and add ‘zebra’ to the table class
Very minor point when posting to forums it’s better not to call on a member directly, the community has a lot of very knowledgeable people helping out a particular member may not be available or may be busy, so don’t impose or limit yourself 
