Hello! I backed up my .minecraft folder, deleted the old IC2 1.64 .jar file, downloaded and dropped into my MC jar folder the new Forge 18.104.22.168, downloaded and copied over the new IC2 1.71 .jar file, and Minecraft loads fine, no ID conflicts. I go to load up my test world and it goes to a black screen of death and crashes. I deleted my IC2/BC crossover mod (That would have been next to be updated) and Advanced Machines mods (also going to be updated next, why I was loading the test world not my main world) so those shouldn't have been effecting anything. I did save the output of the console window (I use a batch file to control how much memory Java uses) so I hope this helps you help me fix this. Thank you for your time.
And as the file exceeds the message length, even with a Spoiler tag, the following Pastebin link is provided to that console window output.
Update: I deleted my IC2 config file and tried again, no luck, and I went over the old IC2 config with new to be sure no IDs got changed, same difference. Not loading up a world, and the last mod I updated was IC2 so logically it should be something I'm doing wrong with IC2. Help, anyone?