~when upgrading to v.8 will existing projects be affected (projects not open but those not yet saved off harddrive). i want to upgrade and use some of the new things in the update in some current projects still on the harddrive that were begun in v.4. safe to?
It should be ok. I've never encountered a problem upgrading. I suggest you leave version 4 installed just in case you do have troubles so you'll be able to go back to it easily if necessary. Also, *extremely important!* ... if you save a .vf project file in version 8 you won't be able to open it in version 4 again. So make copies of your .vf files before opening them in version 8. That way you'll still have the version 4 project available if you need it.