A friend tried to install Google's latest Sktetchup 6 and despite the fact he's running Mac OSX 10.4.11 it failed to install and complained that "Google SketchUp requires Mac OS X 10.4 or above"?? So I thought I'd take a look...
It turns out that the installer does a check for the OS version which apparently fails - I'm not quite sure why as it looks like an ok check - anyway if you want to install it then you can tweak things to get it going. Basically you can eliminate the check:
1) Download and mount the GoogleSketchUpMEN.dmg image
2) Copy the install package (named something like: FM101326ENA.mpkg) to your desktop
3) Locate the package on your desktop and open it using the Control-click (or right-click) menu 'Show Package contents' - open the 'Contents' folder and locate the info.plist file.
4) Edit the info.plist file - using a text editor (or plist editor), or just use the command line : vi ~/Desktop/FM101326ENA.mpkg/Contents/info.plist and remove the lines starting here:
And finishing here:(about 22 lines)
5) Locate the installer on your desktop and run it - and it should just work!