Don't know if you or anyone else has run into this problem? I always like to have latest update and versions on my computer, so when limewire developed 5.0 I wanted to upgrade. Requirements were intel mac running 10.5.6 OS, which I have, I thought there would be no problem. Wrong. Would not install. Found that I have first generation intel imac and it only have 32 bit processor and Java 1.6 is not available to a 32 bit only a 64 so I must still use limewire 4.18.8 until something else developes.