[TYPO3] Problems with extension

[Yoeri Conickx]

Hello everybody.

While installing the extension sr_email_subscribe I made a big mistake by
not installing the extension sr_feuser_register first.

Now I only get this line when I visit the website:
TYPO3 Fatal Error: Extension key "SR_FEUSER_REGISTER_EXTkey" was NOT loaded!
(t3lib_extMgm::extPath)

Is there anything I can do?

Kind regards.
Yoeri.