I have recently switched from Active Home Pro using a CM15 to Indigo 5 using a 2413U. I am still using all my X10 switch modules etc. The change went pretty well but I can't seem to get my HR12A Palm Pad to work. I can control everything from my Mac and also from my iPad using Indigo Touch but I'd also like to use the Palm Pad. I missing something in the setup?

The 2413 doesn't do X10 RF so you'll need some kind of X10 RF receiver - a W800USB, an MR26, or even a little TM751 if it's only a single PalmPad and you can locate it close to where you use it. If you're planning on converting to INSTEON the latter is probabaly the cheaper idea.