I was using Win XP, right up until the current no-sound issue in GSF. That, and a random boot issue I was having made me decide to try out Win 8.1 64bit for the hell of it. I too was seriously worried about driver issues as my PC hardware is quite old. My specs... C2D E8400 CPU ASUS P5N32-E SLI nVidia nForce 680i chipset mobo 2 GB DDR2 RAM Radeon HD4870 videocard WD Raptor HDD Creative Audigy Gamer soundcard I can honestly say that Windows 8.1 installed without a single issue. nVidia decided not to add 8.1 support to it's nForce 680i chipset motherboard drivers, but Microsoft did. The only other driver speed bump was the old Audigy soundcard, but I installed the Win 7 version of the driver, and Win 8.1 recognized it just fine. And now I enjoy the great sounds of GSF, and Windows 8.1 runs fine without demanding any unrealistic or over-the-top hardware requirements. So there is really no need to fear upgrading from Win XP. I waved the XP flag for years thinking it was just fine for what I needed it for. But XP's days are numbered, and I wouldn't be surprised if anyone that continues to run it without security support from Microsoft will probably have many more issues than from upgrading to a newer OS.

I finally finished the base storyline for JK. But before I went to DK for that fight, my holo had another mission icon over it. It ended up giving me a mission to go to Makeb. But after I finished the final JK quest and followed that mission back to the Fleet, it gave me another mission that takes me to Illum. Does it really matter at all which planet I head to now?

I probably made it to the final fight a bit to early for my level (47 Guardian), and when I found out that I was under-leveled was the same time I found out I was only able to use T7. I too was only using Kira since I got her. So after getting my arse handed to me by the Emperor on that first attempt, I went back to Corelia and did all of the missions that General Aves hands out, using Kira. Pretty good green gear was being given as rewards for your companions in many of the missions, so I made sure to grab everything I could for T7. That, and some green weapons and shields dropped off of strongs and elites that fit T7's profile. Also gained level 48 in the process. Went back to DK with a droid that could survive most of the fight, long enough to help me burn the Emperor down. No need to buy anything or mess around with any puzzles.

I bet you fellas are running Windows XP?? I have the same issue, and use Win XP. Looking around the forums, it's an issue with Win XP users only. It has been a known issue since testing. No fix has been announced as of yet as far as I can see.