custom map and theme

[papab]

I starting to create my own custom mapsforge map and theme.   I can load the theme and use it with an openandromap map, or I can load the homebuilt map and some standard themes show up on the menu, but not mine.   
Any ideas why the theme  won't show up with the new map?

Edit: it works in Cruiser, but not in Locus (up to date pro version)
Edit: It looks like a V3 vs V4 issue, maybe my .map is V3.   Not sure why, I have the latest mapsforge jar file.

[papab]

I'll answer my own question.   It appears that if the map is a v3 map, the theme has to be v3, etc.

[karlchick]

correct, to support both maps you will need two version of the theme file. Note there are some syntax differences for the tags too.