Charlie
You did not say which 1.6 that you were using. I do not have chrome, firefox, or Win8 but my beta 2.5 of KM 1.6.0 is very stable on Win7 (32 bit).
https://dl.dropboxusercontent.com/u/1522294/K-Meleon1.6.0_Beta2dot5_en-US.7z
Most macros will run with 1.6 versions. If you have a specific one that you are not sure about, just ask here.
Forum:
General