This is due to the fact that you are most likely using 2 different radio control formats. The Craftsman formats allow for the Security+ format and the older Billion code format to be interchangeable, however, you cannot mix both of these, the result will be as you describe. Only one of the formats will be programmable at the same time, this means that one of your remotes is a different format.
A secondary explanation is that those have a memory cap of 8 remote devices, if you program anymore, it will delete the last one in line and so on. To make sure you have less than 8 and that, over the years, you have not programmed more than that, delete the memory completely by pressing on the LEARN button continuously for 10-12 seconds or until the LED light goes off, then reporgram your remote devices individually according to the instructions.
Martial Maitam
http://www.aaaremotes.com
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Member Since
03/06/2005
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