Error when using ./build update on CentOS 6.6

[Taro]

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://files6.directadmin.com/services/custombuild/1.2/custombuild.tar.gz
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?

Edit: Today it works again, first ./build update generated errors. The second time the errors were gone!

 

[zEitEr]

The error was noticed by me as well. And now it should be solved I think (just tested and no error found).