That has to be a tool tip bug. I checked the xml file to see what is needed. The file shows you need 100 credits (not antimatter), 1 promethion and 1 lab equipment. This is for the 0.50 release and the 0.55 opt-in. I didn't find any information about lab equipment, so I guess it isn't in the game yet.
I did some checking. The celebrity and entrepreneur have the same problem. The tool tip shows the antimatter icon, but the xml indicates it's really credits.
When I put the cursor on the antimatter icon, the next tool tip showed Treasury.
It's definitely a tool tip bug.