Ok, I've made a note of the issue and will work on a fix for the new v2.2 release. I can't guarantee a release date, as we try to support the community in our free time.

On a side note, I do suggest that you upgrade to the latest version of ZenCart (1.5) as it has been out for more than a year. Using an old version leaves you vulnerable to hackers/ID thefts. In fact, the PCI Compliance board requires that you upgrade within 3 months of any new cart release.