Can´t align Textures

Hello, i´ve tried to aligning any Texture that is available in the Material Folder. But it won´t work.
I dont know how to solve this issue.
When i do two BSP´s and connect them without overlapping and place a wood Texture on both and dont want any seems, i go to the aligning menue and choose align surface planar. Nothing happens, if i choose all the others theres also no function. Seems to be i´m the only one. What do i make wrong?

Thanks a lot for your help.