Had an odd bug that would not let me get the promotion to CMD quest.
When I was promoted to LT. CMD I bought the Rhode Island for my LT CMD ship thus saving my dilithium for my next promotion if needed. However it did not complete the LT CMD promotion quest. I didn't think much of it till today. I hit CMD 1 but could not get the promotion as I still had the LT CMD quest active. It said I still had to get a LT CMD ship, even though I bought the RI ship at LT CMD.
So long story short I had to spend 7000 dilithium on a ship I will not use so I could get my promotion to CMD. After I bought the ship everything progressed like normal.