Board Thread:Questions and Answers/@comment-7672740-20130401122908/@comment-13413401-20130908115106

I ran into this problem a few week ago, and it turns out that this happened because my Allocated Memory setting reseted to 512 MB. Tekkit Lite needs at least 1 GB of allocated memory to run properly, and without enough memory, it gets stuck on the white screen. So in the Technic Launcher, just click on the settings icon and set the allocated memory to at least 1GB. If you want to allocate more than 1GB, then you need to have 64-bit java installed as well (on a 64-bit computer...).