I came across this using v0.2.4, but the code appears to persist in the svn repository.
In the file semantic-classes.php, in the function semantic_comments
, there is the following:
$classes = get_comment_type();
This generates the following error for me: [] operator not supported for strings
(line 334, which is actually a couple lines later), and causes all comments to fail to display. This is a big enough bug I can only assume some particular configuration of the PHP at Pair.com results in this and it is not commonly observed.
Changing the line in question to...
$classes[] = get_comment_type();
...appears to solve the issue, though my PHP skills are not such that I can really be sure I haven't introduced some unintended "feature" in the mix.