virtualbox.org

In the Autodesk Architecture program the Mac Mouse is not functioning normally. When I go to move the cursor it takes off and moves around as if it has a mind of its own. It takes several seconds (or more) to regain any control but then does it again as soon as I try and do anything. Very...very frustrating. This started last week and I don't know why. Same Autodesk program; same profile within the program, same mouse, etc.

Anyone having this problem? I need a fix quickly...as I'm not productive this way at all. I'm having to go back and forth between the iMac and my old PC.

iMac 27 Core i5 4gb ram; latest version of Virtualbox and extensions and guest additions installed

Try installing the guest additions (in the guest) again.
Without knowing for sure what changed it may be difficult to know what else could be causing this problem.
If installing the guest additions again does not help then post the guests log file (as an attachment)

I reinstalled guest additions and it didn't help. Where do I find the log file so I can attach it? Thanks.

Post the guests log file (as an attachment)
See Online Users Manual for the location of the file.

Log attached

00:00:01.068 Host RAM: 4096MB RAM, available: 1036MB
00:00:01.319 RamSize <integer> = 0x0000000040000000 (1 073 741 824, 1 024 MB)
00:00:01.320 VRamSize <integer> = 0x0000000004000000 (67 108 864, 64 MB)

When you add the vRAM to the assigned RAM you are allocating more memory to the guest than the host has available.
Free up the hosts memory usage.