Large Deflection on -X Direction for Wind Load

Question

Cantilever Truss.std 
 Could someone check for me this problem matter;- 
 a) Large deflection for -x direction on wind load 
 b) Warning - Instability at joint 
 
 Thanks

Modestas · Answer

You should be assigning moment releases (or partial moment releases) to the web members of the truss only, but not to the chords. Also, if you are using tension only members, the loads should be combined with Repeat Load option instead of Load Combination.