Error when using ./build update on CentOS 6.6

Since today ./build update triggers the following error:



./build: line 1161: [: -eq: unary operator expected

Skipping Mail-SpamAssassin tarball, needs more arguments in doclean_old_tarballs().

Skipping zlib tarball, needs more arguments in doclean_old_tarballs().

Skipping ZendOptimizer tarball, needs more arguments in doclean_old_tarballs().

Usage: grep [OPTION]... PATTERN [FILE]...

Try `grep --help' for more information.

Skipping proftpd tarball, needs more arguments in doclean_old_tarballs().

Skipping pure-ftpd tarball, needs more arguments in doclean_old_tarballs().

Skipping suphp tarball, needs more arguments in doclean_old_tarballs().

Skipping roundcubemail tarball, needs more arguments in doclean_old_tarballs().

Skipping squirrelmail tarball, needs more arguments in doclean_old_tarballs().

Skipping phpMyAdmin tarball, needs more arguments in doclean_old_tarballs().

--2014-11-03 21:36:22-- http://ift.tt/1oc4930

Resolving files6.directadmin.com... 2001:16e8:1:4:62:148:181:110, 62.148.181.110

Connecting to files6.directadmin.com|2001:16e8:1:4:62:148:181:110|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 116706 (114K) [application/x-gzip]

Saving to: `./custombuild.tar.gz'



After that I see lots of other errors. Is this a CB bug, or can I solve it?

Error when using ./build update on CentOS 6.6