The error gives you a couple of places to look:

1) Does the packages folder actually exist? It should be in the root of your concrete5 install. By that I mean the folder where all your files are, should have a folder called packages.

2) Is the packages folder writeable by the web server? Depending on your configuration, you may have to change the "permissions" on the folder to allow the webserver to write to the folder. I don't know what server you're using, so it's difficult to explain how. I'll assume it's a Linux server, in which case you would need to use your file manager, cpanel or FTP client to set the permissions to "drwxrwxrwx" or "777" or make sure that all the "w" options are checked.

Thanks for the quick response.

Ok, the server is Linux and the package file does exist and is empty. In the public_html/conc/config folder, site.php permissions is set to 0777 and site_theme_paths is set to 0644. I'm reluctant to reset anything without specific instruction, lest I make things worse.

hbenagh

is your packages folder permission 755 ?

No it's 0777

try changing it to 755 as mine has that setting

Dear Silko,

I just changed to 755 but still no joy. Same message.

can u try and install another free theme from the marketplace to see if its related to this particular theme

Ok, I just picked Rigid Light theme, clicked download and install and it
worked perfectly.

hbenagh

seems its your theme then and not the core. you would need to contact whoever designed the theme.

Will do. Anyway it's installed and working fine, but I'll let them know
about the snag.

Thanks again,

hbenagh