Thank for your thorough, well-written post. It was a HUGE help and relief. By coincidence, I decided to start a Tekkit server this morning for the first time ever, and so was trying to learn Tekkit from the beginning and not knowing if the "Update Failed!" error was me, a normal problem, or what! Needless to say I was very confused and, after several hours, getting pretty frustrated.
Your solution worked perfectly, and I wanted to confirm it for Mac OS, since I didn't see any confirmations for Mac yet. My setup, in case any of it matters (it's essentially an off-the-shelf iMac from Mid-2011):
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Mac OS X v10.7.5
2.7GHz Intel Core i5
4GB DDR3 (RAM)
and the graphics card is the AMD Radeon HD 6770M 512 M
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I can also confirm that:
/Users/USERNAME/Library/Application Support/techniclauncher/cache
is indeed the correct directory on Mac OS, but PLEASE NOTE that I removed the "." from in front of "techniclauncher", as it was not used on my install, at least. Another thing to note for Mac users that do not already know: by default, Mac OS hides the ../Library/.. directory that is under your user folder. I cannot remember where I changed the setting, but there is a setting in the "Preferences" somewhere that makes hidden files visible, and you'll want to turn that on or you won't see the directory you need. Googling how to do this should turn up the correct setting or the correct command to use through the terminal app.
Thanks again for this timely help!
