Thanks for looking into this already. Now that ST3 is in open beta, I'm trying to get set up with it to write and BufferScroll is essential (I have been using it daily since you got it to its current level of functionality, all that time ago, thanks).
Now in ST3 (I'm running Win7x64, if that makes a difference) and I can get typewriter scrolling working fine, but no scroll sync. It will appear to scroll sync briefly if I erase the user settings file and throw in a fresh copy of the default settings file for the plugin, but the only file I've seen scroll sync even then has been the default settings file (I've had a long plaintext and a short plaintext file open and ready to go for testing but neither have responded), and even that behavior subsides quickly.
Seems suspicious to me, like maybe something in ST3 is changed or broken, but right now, ST3 is nearly useless (funny how the lack of your plugin cripples the whole thing for this particular user).
Any thoughts on what might be going on here? I've made sure to try removing the file type specific settings you made as examples in the default setting file and also leaving them be and setting scroll sync for plaintext to true. I've also gone in with fresh copies of the default settings, copied the whole thing over to user, then set them all to true, just in case there was some conflict. Obviously some folk have it working, and I've seen it fire a couple times here, so I don't know what else I might be doing wrong.