Just tried using 8.0.0.385 solo and it crashed with: http://pastebin.com/aUULnG7v

With:

CoFHCore-[1.7.10]3.0.0RC2-199.jar
CoFHLib-[1.7.10]1.0.0B9-118.jar
ThermalDynamics-[1.7.10]1.0.0RC2-77.jar
ThermalExpansion-[1.7.10]4.0.0RC2-129.jar
ThermalFoundation-[1.7.10]1.0.0RC3-56.jar

it crashes with: http://pastebin.com/zpBrmhVG

Also, not sure if this is relevant but after v8+ using mekanism with bunch of other mods gives a mod sorting warning upon loading and won't let me use it.

Here is a log for that as well: http://pastebin.com/1UxZrGX1 (part of the log about sorting). I can provide full log if you need.

Tell me if you need any additional information. Thank you for this awesome mod!

The second error is a Topological Sort bug, not on my end. As for the first, that's not necessarily solo if you have CoFH mods installed - try an installation with literally ONLY Mekanism installed. I'll reopen if you confirm this is on my end.

By solo, I meant solo. Look at the first crash log. There is literally only mekanism installed and ForgeMultipart it downloads on startup. It gives two different crashes with and without CoFH mods installed.

Aha! I misread this whole thing. The more recent beta builds are likely to crash - I'm currently in the process of adding a ton of new content which means unstable builds. Once I finalize the new content the builds should stop failing.

Apologies for the confusion!

Got it. Thanks.