Cigar blowing up in Traveldor??

[Mattso3000]

Had this traveldor for over a year now and keep a Boveda 69 in it for humidification. I have never had a problem with it before, but for some reason the Tat I'm smoking now started to burst. It's only been in the case for 3 weeks, not sure what the problem is as the hygrometer reads 65 constantly... Any suggestions to keep this from happening in the future would be appreciated! Thanks in advance.

Matt