Engine Swap/AC Question

Hi everyone, I did an engine swap on an 01 Alero this weekend with 2.4L engine. I got everything back in and the car runs great, the only issue I am having is now the AC will not work. It worked fine prior to the swap and I didn't disconnect any of the ac stuff, I just unbolted the compressor from the block and set it to the side. I was just wondering if anyone else has had this happen and maybe some possible causes. Thanks!

when you say A/C will not work, what do you mean? is the compressor engaging? If so are you saying it is just not blowing cold air? if not are you sure you remembered the connections on the compressor.