Hi,
I got the same failure when trying to install on PowerPc. I believe it is related to quoting as the submitter suggested. iso-scan first looks at the root level to find iso's, then scans each first-level directory as well, using the BusyBox find command. When parentheses or spaces are included in the folder name passed to the find command, an error results.
To make a long story short, here is the patch that fixed it for my installation:
--- iso-scan.postinst rev 1298
+++ iso-scan.postinst.patched
@@ -165,165, +165,165 @@
- isolist=$(find $dir $opt -name "*.iso" -o -name "*.ISO" 2>/dev/null)
+ isolist=$(find "$dir" $opt -name "*.iso" -o -name "*.ISO" 2>/dev/null)
--
Chris Tillman
Developer