java - Imported library is marked as an error right after i close propperties -

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so, i've started having weird errors when i'm import android support library v7 using eclipse, follow steps on android site , working fine. working towards 4.0.3 changed target sdk on v7 library 4.0.3 , built before exported jars. on project properties looks great:

dropbox image

but when apply settings, close dialog , re-open without doing else looks this:

second dropbox image

i've tried reinstalling library , clean , build several times still same wierd error. also, when hover on apperantly faulty library there no error mentioned.

copy project , support library workspace using eclipse. both should in same folder.


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