is my b&w photo enlarging paper bad?

its illford fiber based paper that i had on a shelf for about a year, it was previously opened. the papers are now warped, like the sides are starting to bend in. the room wasnt a consisting temperature so im thinking its bad. i want to know if it might be fogged also. thanks

Judas2012-11-21T04:45:09Z

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If it has had enough heat to warp, it might have had enough heat to be fogged. You can find out by developing a sheet of paper without exposing it - look for dark patches.

You might still be able to use the paper if you have an easel that can hold the paper flat enough. Once you've run the paper through your wet trays it could well fix the warp and they could dry flat. You'll have to wait and see.