During a B8 64-bit Linux install I got the following:
Compiling macros. Please wait...
Unable to open input file: /opt/slickedit_18beta8/macros/editflst.e
Can't say I normally pay much attention during the install, so I don't know if it happened for previous v18 betas. I see the file in my v17 install directory, but not in any of my v18beta install directories.
Didn't seem interfere with the install at all, just bringing it up as a minor nit.
-Ken