Reinstalled SQL, can't access old DB

[fees]

I had a newer version of SQL that PT4 was having trouble with (importing was really slow)

I reinstalled SQL and have 9.3 now, but can't access the older DB's it says "You cannot activate an invalid database"

Heres a screen shot of them, the blue high lighted one is the new one that I can use.
http://imgur.com/a/iUZAr

[Flag_Hippo]

Databases created with one major PostgreSQL version (e.g. 9.4.x) cannot be accessed with a different major PostgreSQL version (e.g. 9.3.x) so the only way to access those again would be with the version you were using before.