backup2l 1.6-pre2 cannot deal with some "nonstandard" file names.
Consider these errors:
Creating archive using 'DRIVER_TAR_GZ'...
tar: /var/www/newtestamentwiki/web/w.OLD.OLD/extensions/BaseHooks/C\:\nppdf32Log\debuglog.txt: Cannot stat: No such file or directory
tar: /var/www/newtestamentwiki/web/w.OLD/extensions/BaseHooks/C\:\nppdf32Log\debuglog.txt: Cannot stat: No such file or directory
tar: /var/www/newtestamentwiki/web/w/extensions/BaseHooks/C\:\nppdf32Log\debuglog.txt: Cannot stat: No such file or directory
tar: /var/www/withoutvowels/web.OLD.OLD/w/extensions/BaseHooks/C\:\nppdf32Log\debuglog.txt: Cannot stat: No such file or directory
tar: /var/www/withoutvowels/web.OLD/w/extensions/BaseHooks/C\:\nppdf32Log\debuglog.txt: Cannot stat: No such file or directory
tar: /var/www/withoutvowels/web/w/extensions/BaseHooks/C\:\nppdf32Log\debuglog.txt: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors