A few weeks ago, my Treo's battery died in the middle of the night. After a recharge, and then a hard re-set, and then another hard re-set, it will no longer install files from my Mac (OS X/Palm 4.0). It also wouldn't sync at all until I sync'd it first on my office PC (Windows 2000). (All of this used to be seamless--it would sync on both the PC and the Mac without blinking, including installation of files.)

I tend to buy programs at home, and I'd like to install them using my Mac, but so far no joy. Any ideas?