Uploading error when submitting an edit

Some days ago I already mentioned this bug(?) but it happend again.

I edit an Issue (adding summary, characters, date etc) click on submit and then I get a red "Oops sorry" banner and the submit banner geos white.

First I thought it did submit and looked at my wiki history, but nothing. I don't know what I do to cause this error, because I know those characters aren't deleted (I went through all pokemon some time ago)

I use:

Windows 7
Firefox version 23.0.1

Update: I just edited the Issue on Chrome without adding the In Store Date and it worked, could it be because of the date?

Edit: I just tried to edit the In Store Date in Firefox and Chrome and in both did I get an "Oops Error"

@emh_bruce: I've noticed this too from time to time, the dates can be pretty buggy, it happened to me twice last night.

@pikahyper: If I go after different comics, it happend twice to me so far.

...I just found the mistake I made here....

I wrote the date in the "european" way 13. March 2001 instead of March 13. 2001

but that only explains it here, not on the Cartoon Aid book, where I just added the year.

@emh_bruce: ok I will keep an eye out and next time I see it I'll take some notes and test some stuff and post it back here and hopefully that'll help the engineers. I think there is a good possibility that this may be connected with the other date bugs that have been a problem and an engineer was working on them but I think he got called away cause he didn't finish.

@pikahyper: It happend again, but I didn't try to add a date this time. I only wanted to add a Summary, creators, characters etc. and the semicolons you mentioned in your wiki comment.

@emh_bruce: It is happening because you are trying to add a deleted location.

@pikahyper: .....argh, I fell for the Stark Tower -__-°

thank you

@emh_bruce: np