It appears that the changes in 2.1.4a attaching radiation information is breaking Thaumcraft aspects making it unplayable.
This output from ThaumicJEI's aspect json file illustrates the issue:

Pre-2.1.4a:
"aspect": "lux",
"items": [
"{id:"minecraft:glowstone",Count:30s,Damage:0s}",
Post-2.1.4a:
"aspect": "lux",
"items": [
"{ForgeCaps:{"nuclearcraft:capability_radiation_source":{radiationLevel:0.0d,radiationBuffer:0.0d},"nuclearcraft:capability_default_radiation_resistance":{radiationResistance:0.0d}},id:"minecraft:glowstone",Count:3s,Damage:0s}",

Is there any way I can disable registration of these radiation fields on unrelated items?

@theron61 Could you see if using this build fixes the problem?

Should be fixed in the latest build :)

It does not appear to be fixed. I am still not able to see aspects on common items or break them down in the crucible.

Is this 2.14b or 2.14c?

2.14c from Dropbox. I'll try rebuilding the mod pack and try again.

Just tried it with the CurseForge posted copy and it appears to work. I will keep testing.

Ok, thanks - if stuff is still broken, then that could be a bit of a problem :P

It's not quite as simple as that, because this would still be broken for people who want to play with radiation enabled. Will look for a solution now :)