It could be. I've noticed that sometimes sometimes people don't wait for fastboot to completely finish and that causes problems too.
Looking at the RSDLite program you have to get to the point where it says it's finished. I noticed that it will boot the phone and everything looks good but RSDLite still says it's waiting for the phone to reboot. At that point you have to turn off the phone, hold power and volume up and volume down at the same time. Then use the down volume button to go to AP Fastboot and use volume up button to select it. Then RSDLite will complete and reboot the phone.
Once its downloaded you have to unzip it. Inside there will be two files with the same name, but one is a zip and the other is a crc file. You need the zip file, which is Blur_Version.6.13.219.XT894.Verizon.en.US.zip. Copy it to your SD card, do not put in a folder on your SD card.
So both you guys finished flashing 219 so RSDLite says Pass, you rooted and did the necessary steps with Rootkeeper, and now you've both downloaded the leak, unzipped it, and placed the correct file on your sd card?