Patches from Text

Hello,

This may seem a stupid question (nice start!)

Usually the examples of the patches that users of this forum send are pasted into their messages.
To view the patches, i usually copy and paste the max code into a new patcher window, which is the way that i guess everybody else does.

This works on my system at home (iMac Intel, running Max 4.6b11 UB Release - Trial, Nearly expired!!).
I work either at home or at University, so at Uni the systems that are availavle are: iMac G5, running Max 4.5.2.

For some reason i can't copy and paste max code into the uni systems, like i would be able to do with my system at home.

This seems a bit strange, is there anything i'm doing wrong? Is there a process that would enable me to open these patches on the uni systems?