Unless you're doing some advanced stuff, version incompatibilities should usually not be the first thing to suspect. In 5+ years on Google Play, I think I can count on my hands the number of issues caused by new versions of Android - as opposed to simply caused by my own stupidity (i.e., bugs).

Also, I'd strongly recommend moving to Android Studio. I stuck with Eclipse for a long time myself because it's what I use at work, but at this point AS is the clearly superior IDE for Android. After Google ceased support for the Eclipse SDK, I don't think sticking with Eclipse is worthwhile for Android development. Potential cause of issues, with few upsides.