maybe your Microsoft.Net Framework's version is too old. q; R, Q" c: m4 |" V3 ~6 N/ R; z4 l+ r2 ~. }, ^8 L# E
you had better " upgrade " your Microsoft.Net Framework < first > & B( P/ n) `# B7 E. D+ ?8 W/ d9 Y3 a! l/ U: y% c
that maybe can solve this problem