Mounting a metal plate to a textured wall - Help!

[Davetheone]

Hello! I have just moved into a new place and I have been looking into purchasing some Displates. Basically they are thin metal "posters" (http://displate.com) for mounting onto the walls. However my problem comes in that the mounting system they provide is a glue backed magnet which sticks to the wall and in turn holds the metal plate in place. Unfortunately the wallpaper in the room I want to mount them is textured and will not hold the plates securely.

I was hoping that someone might be able to suggest ways for me being able to mount the plates onto the wall without the use of the magnets but without having to drill through the plate to attach some kind of hook or mounting device.

The specifications of the plates are:

45cm (17,7") / 32cm (12,6")
0.9 kg. (2 pounds)
0.5 mm

All suggestions are welcomed and appreciated!

 

[Crystalclear]

Small blobs of this, not too much though, preferably rows of three or four as you make your way down.
The larger the blobs, the more the gap between the displate and the wall.

http://www.screwfix.com/p/gripfill-adhesive-350ml/10261

And one of these to pump it on with.

http://www.screwfix.com/p/no-nonsense-sealant-gun/83385

If you've never used this tool before, the nice people at Screwfix are always happy to help you prepare it, ready to be used who you get home.