The installer should not assume bzcat is an available program. For example, pristine debootstrap environments to not have bzcat. The resulting error message, in this case, is difficult to relate to the problem. The following patch adds an explicit check for bzcat.
Created attachment 1465 Check for bzcat before using it This is a patch against svn's installit/branches/installer-single-file. I'm not very experienced in shell scripting, so feel free to make any modifications.
Close bug reports of archived products.