Background story of how this problem came to be (complete with extraneous information LOL):
I moved a CAS Sim. Mitch Jenkins, into his house, and part of the welcome wagon was a townie named Amber Hiatt. They got aquainted, then I got rid of everyone so I could summon Brandi Broke. (Got tired of a potential mate to walk by, so I made Mitch especially for her.) I used the Quick Relations thing from Insimenator to build their relationship up to mutual crush, sent her home. After two (?) days of him going to work in his medical career, I wanted him to get another promotion. He needed one more friend, so I used Quick Relations again, this time to be mutual friends with Amber. She was not on the lot at the time, and Mitch was just about to enter the car to go to work. (I paused the game so I could get it done before he left.) But there was no increase in relationship status. Tried again, and again nothing happened. So I figured maybe it was just a lag, and let the game run. She never changed to a friend, and naturally, Mitch didn't get the promotion that day.
So I decided to try it again, but this time I wasn't able to select any options. I figured I must need to bring her to the lot in order for it to work, so I invited her over. On the upside, I *was* able to get her status changed to a friend once she got there, but that's all I could do. I wasn't able to greet her. Every time I tried to click on her, I got the "no action is available" message. Since I didn't greet her, she wouldn't talk to me, and finally left.
I brought her back the next Sim day, still determined to figure it out, and again I wasn't able to interact with her. Not good, considering 3 of his wants involved interactions with Amber! So I pulled out Insimenator, made her selectable, and had her talk to him, etc. to fulfill his wants. Switched to Mitch, hoping I'd be able to click on Amber now that she had talked to him... no dice. I finally got disgusted with the whole thing and made them mutual strangers and discarded the thumbnails.
Did I inadvertently cause this crap to happen by trying to make them mutual friends while she wasn't there, and/or because he was in the process of going to work?
I got rid of the issue by deleting the friendship, but it's bugs the hell out of me that I couldn't figure it out. Anyone know why this happened?