no, it's not the component. the "problem" is that the "user" that executed the installation of Music COlleciton (I'm refereing to the "linux" user, nothing you can control) probably has not the right permissions.. so maybe the muscol folders "belong" to a different user:group that the rest of the installation. is this possible?

can you perform a chown command?

also: NEVER do chmod 777. NEVER. EVER. some servers may even not permit that, so it is possible that this is the reason you cannot do it.

have you tried chmod 755?

It is a strange hosting that is not under my control. It's very strange, and it is first time I have found a server like this .. xddd (Certainly I am novice, and only develop sites for friends).

The extrange is that it doesn't work with 755 permissions. I know I never have to use 777, but in this extrange server, joomla only works with 777. With standards permissions doesn't work. Last year, for the I edition of the competition happens the same.

you are right, I spoke to the admin about this, and the problem was the user. I asked for permissions for my user. he did it, and now, I can upload files to the server.

I have tested that components and modules that I have upload when migrating for my test hosting to this hosting I hadn't problems, only with new components installed directly in this server. (I developped the web in my hosting, and when it is almost finished, except musicol component and 2 more, I migrate it)

With another component, hwdvideoshare, I have the same problem. Cache directory was set as 755 and it didn't work until I changed to 777.

Funny.
Now everything is working properly.

so weird...!! :lol: usually 777 is not permited, and they work only with 755... in your case it is the opposite! so strange!

anyway, good thing to hear it works now!