There is a situation that some users might face when the option in the System Settings “Set file size limit” is changed, and they aren’t able to import a solution is receiving a message that “Webresource content size is too big”.
When you change this option, for example to 500, the files like webresources are influenced by this value so it wouldn’t create a webresource with a size higher than 500kb. It will also influence the import of a solution since the internal process will check the size of the web resource.
The maximum size of files that can be uploaded is determined by the Organization.MaxUploadFileSize property. This property is set in the E-mail tab of the System Settings in the application. This setting limits the size of files that can be attached to e-mail messages, notes, and and unfortunately web resources. The default setting is 5MB.
Hope this helps.