Getting this error message on extension manager

[Yumda]

Hi there:

While updating SB prime extension using the extension manager I have been getting the message and only happen when I try to update litdev extension.

Does anyone has any ideas?

error message: 

"Extension version incorrect: 1.2.29.11 (Database), 1.2.29.12 (Downloaded)

Do you wish to continue?"

upon selecting yes, nothing happened.

Would welcome any input.

Regards