DNS Zone Stop working after add record

Hi! how are you?

I don’t know why but DNS Zone Record stop working after add a specific TXT record I need, it’s a google site verification record like
email.mydomain.com TXT google-site-verification=y-Vnx_C_DB*****(hidden).

After do that I checked in intodns.com and there are some errors like this:

NS records from your nameservers NS records got from your nameservers listed at the parent NS are:
Oups! I could not get any nameservers from your nameservers (the ones listed at the parent server). Please verify that they are not lame nameservers and are configured properly.

Of course there are more items, I don’t know if it’s convenient to send the real domain here in this topic.

When I delete this new record, everthing start to work well again.

Are there some info you consider useful to add? please let me know since I could add this record again to do some test, but I need to delete it quick so I avoid to customer kill me :P.

check your bind logs.