Sharing FCP projects between user accounts problem

Hello!
I'm working on a project with several other colleagues. Each of us has his own User account on the computer (dual G5 / 10.4.7) because we have different preferecnes regarding keyboard layouts, desktop colour etc. We would like to have our FCP project files accessible to each of us.
I have tried different approaches to solve this task, but haven't fully succeded yet (I tried creating the project file within the /Users/Shared foler; putting it into a dedicated /Users/FCPProjects folder and applying chmod/chown commands; creating a Editors group with NetInfo and assigning those foders to this group; I even tried to work around this using ACLs).
The problem is that when we click "Save All" command in FCP, we get three or four OK-only dialog boxes in a row saying "Access denied". The project file is in fact saved (I can see it by checking the Modified time in Finder), but FCP seems not to be aware of this and doesn't want to quit. It's an unpleasent situation because it allways makes us worry about losing our work.
Could someone please give us instructions on the correct procedures for resolving the issue.
Thank you
Best regards
Mato Ilijic

matoid,
ACLs should work for you, and it seems that they are. You shouldn't have to deal with the error dialogue either, so let's see if we can't get rid of it.
First, let's talk about groups. I have looked at your "step by step," and I notice that you didn't bother to change the group ownership of the "shared" folder that you created. Fine, ACLs still work, but the group ownership of "wheel" might be the cause of your error messages. ACLs are a more advanced system of access controls than the older POSIX system, but POSIX still exists, and might affect your work.
Let's assume that you have your standard users that will be using FCP placed properly into a common group. For this discussion, I'll call that group "fcpusers." Under the POSIX paradigm, any "shared" folder can be owned by any one of the users in this group, but it must have a group ownership of "fcpusers" in order to work properly for everyone. When it does, every new file or folder created in it will "inherit" that group ownership.
Now, every user on a given machine will have read access to that shared folder. If a non-member of group "fcpusers" attempts to save a file there, however, an error message is likely to appear. One other possibility is that the file is saved, but with an "unknown" group ownership. This is because of a conflict between the groups the saving user is a member of and the attempted "inheritance" from the enclosing folder.
I want you to try the following. Please do this exactly as I outline it:
1) Create a new group in Netinfo Manager. Duplicate the "admin" group. Change the name of the duplicate to "fcpusers," then delete the "realname," "generateduid," and "smb_sid" properties. Change the GID to "101." Select the "users" property, then choose Directory>Insert Value. Type the short name of one of your users. Repeat this procedure for every user of FCP. Select any admin users in this group who will not be using FCP, and click the "Delete" icon. Finally, choose Domain>Save Changes.
2) Create a new folder in /Users/Shared. For this discussion we will assume that you will call it "FCP_Data." Further, we will assume that one of your FCP users is named "usera" (your terminology ;-)). Open Terminal. Since you seem to be well-versed in the use of Terminal, I will simply post the commands needed:
<pre style="overflow:auto; font-family: 'Monaco'; font-size: 10px">sudo chown usera:fcpusers /Users/Shared/FCP_Data
sudo chmod g+w /Users/Shared/FCP_Data</pre>
3) Before anyone begins saving files in this directory, make sure that their umask is changed using TinkerTool. Also, I recommend that all media gets saved here, too. I'm not sure how close FCP is to iMovie, if it doesn't save all data in a "package," but it is likely that media is being referenced using "placeholders." If this is the case, and media for a given project is scattered all over the file system, there could indeed be ownership issues. If media needs to be on externals, this same "shared" folder can be created there. Just make sure that #1, the volume has "ownership and permissions" in effect, and #2 all media is kept within the "shared" directory structure.
You must use TinkerTool to change the umask such that members of the group have read/write permission. TinkerTool doesn't specifically say this, but the corresponding umask is "002" (the OS X default is "022"). BTW, umask is subtracted from the "full permissions" value of "666" when saving non-executable files ("777" for folders and executables).
Once you have a properly configured "shared" folder and a proper umask in place, your users can begin to populate the shared directory. If any existing projects are to be added, they must be copied by a user into the shared directory, not simply moved. Only when a copy is made will the new copy inherit the proper group ownership. Just to be sure, I will include one more set of commands to use, once the shared directory has been populated:
<pre style="overflow:auto; font-family: 'Monaco'; font-size: 10px">sudo chown -R usera:fcpusers /Users/Shared/FCP_Data
sudo chmod -R g+w /Users/Shared/FCP_Data</pre>
Please follow these instructions carefully, then report the results. This should work, and without using ACLs.
Scott

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