On 8/29/2010 12:16 PM, Andrew DeYoung wrote:
There was a post about this sometime ago (2008, I think), but I am wondering if you can help me with this in case the answer is different now. I am running Lyx 1.5.4 on Windows XP. I would like to "test drive" the latest version, which is I think 1.6.7, while still keeping 1.5.4 on my computer and ready to go in case I need to revert to it if 1.6.7 doesn't work out. Is there any way that I can do this? Or do I need to uninstall 1.5.4 before installing 1.6.7?
There should be no problem running them side by side. By default, LyX 1.6.7 will install itself in C:\Program Files\LyX 1.6.7 and put your local user direction in C:\Documents and Settings\<you>\lyx16. As long as there's a 6 in each of those paths, it won't clobber anything from 1.5.4. The only other tricky spot is the registry. The installer will make 1.6.7 the default program when you double-click a LyX document file. I think the uninstaller will revert that to 1.5.4 if you uninstall, but worst case you can fix that manually.
One thing to watch out for is backward compatibility. LyX 1.6.7 will open documents that 1.5.4, created, but if you create a doc in 1.6.7 that you will need in the future, you might want to export it in 1.5.x format so that you can open it with 1.5.4 in the event that you uninstall. (I very much doubt you'll go back to 1.5.4, but I understand your caution.)
/Paul
