Unable to install VirtualBox Guest Addtions on Fedora 64bit LXDE

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http://unix.stackexchange.com – I'm Unable to install VirtualBox Guest Additions on Fedora 64bit LXDE, the first couple of Linux virtual machines I setup I had no problems with guest additions, but I had to throw them again because of other issues. Fedora is working fine except for the guest additions part. First of all I was able to mount it, but it wouldn't run LinuxAdditions.run, does Guest Additions support 64bit Linux or only 32 bit? Then on another attempt it complained that it couldn't mount the image but asked if I wanted to Force *Un*Mount which didn't work the error indicates a locking problem (VERR_PDM_MEDIA_LO (HowTos)