Because I never had troubles with it, I used 1.2.6 so far. When wanting to install a package, VirtualTrees, and it didn't show up, I was told to use 1.8.0.
I downloaded it, 32-bits version for Windows 7, and installed it as a second version. When executing Lazarus, it mentioned it couldn't find the sources for FPC 3.0.2. So I downloaded the sources and copied them to the right place. Strangely enough there was a directory named 3.0.4.
Starting Lazarus again the error was gone and I could start the IDE. What I just described before was my third try of deleting the old version and installing it new because trying to compile an existing program that ran fine under 1.2.6, I ran into a weird error. So this time I compiled the empty program Lazarus presented as default. Again the same error: see the attached PNGs.
I hope someone can tell what is going on, thank you!
Kind regards, Ruud Baltissen