We've encountered two bugs in Links SQL's payment handling code, one of which causes unlimited/lifetime payments to not work successfully, the other of which causes recurring payments to not be handled properly. The attached file replaces Links/Payment.pm, and fixes the problems. I've also updated the 2.2.0 download for installations performed as of this post.
Jason Rhinelander
Gossamer Threads
jason@gossamer-threads.com
Jason Rhinelander
Gossamer Threads
jason@gossamer-threads.com