Why is my A/C blowing warm air

[smorg007]

I had the whole system gone through last summer and it worked great in our triple digit climate. Now it blows warm air. You can see by the pics that the lower tube ice's up instantly when I turn it on. I checked and replaced one vacuum line and reconfirmed heater core shut-off valve was functioning properly, baffle rod inside core housing that diverts the air moves with cable. Any ideas is appreciated.