Older versions of VICE had several problems with labels. However, even those versions were still tremendously useful, and all known problems are gone in current versions. So, here is a list of the problems known to me as of version 0.16.1:
ll
" command does not work. Worse, it seems that internal
memory gets corrupted when using this command, so VICE will crash after use.
Use the "pb
" command to load the label file in this case.
Note: All these problems are fixed in current (>= 1.0) VICE versions. If you're really using such an old version, you should think about an upgrade.