Erro no gerenciador de mídia do zOOm Galery

[Filipe Torres]

Olá a todos,
instalei o zOOm Galery 2.5.1 RC4 no Joomla 1.0.11, criei uma galeria, mas quando tentei inserir uma imagem deu o seguinte erro:

[tt]Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@brazilianhandicraft.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. [/tt]

Alguém pode me ajudar? Estou sem poder testar o componente por causa disso.
Já desinstalei e reinstalei novamente e o problema persiste.

Filipe Torres