When I try to install JBuilder 4/5 on my Linux machine I get the error:

The included VM could not be extracted. Please try to download the
installer again and make sure that you download using 'binary' mode.
Please do not attempt to install this currently downloaded copy.

I have tried downloading the installer many times (or I have a CD) but the installer doesn't work. What can I do?

Many Linux distributions do not install the ncompress package by default, which includes the compress and uncompress utilities. The JBuilder 4 and 5 installers need the uncompress utility, but give the above error if it is not present.

There are several solutions to this problem:

• The best solution is the install the ncompress package from your Linux distribution.
• Create a link in /usr/bin to gzip and call it uncompress.
• If the link does not work, create an uncompress script in /usr/bin with these contents:

  #!/bin/sh
gzip -d $*