fix NPE. Fix fix gradle issue due to cofh dick move

gradle.properties

@@ -3,8 +3,6 @@ aechannel=stable
 aebuild=7
 aegroup=appeng
 aebasename=appliedenergistics2
-extended=extended_life
-extendedversion=v0.55.16
 #########################################################
 # Versions                                              #
 #########################################################
@@ -22,7 +20,6 @@ jei_version=4.16.1.302
 tesla_version=1.0.63
 ic2_version=2.8.73-ex112
 top_version=1.12-1.4.23-16
-cofhcore_version=1.12.2-4.5.2.19
 crafttweaker_version=4.1.20.684
 ctm_version=MC1.12.2-0.3.1.16
 forestry_version=5.8.2.387
@@ -42,7 +39,7 @@ modId=appliedenergistics2
 modGroup=appeng
 # Version of your mod.
 # This field can be left empty if you want your mod's version to be determined by the latest git tag instead.
-modVersion=rv6-stable-7-extended_life-v0.55.18
+modVersion=rv6-stable-7-extended_life-v0.55.20
 # Whether to use the old jar naming structure (modid-mcversion-version) instead of the new version (modid-version)
 includeMCVersionJar=false
 # The name of your jar when you produce builds, not including any versioning info