problem with a file copy (permissions)?

hello friendly noodlesoft forums!
(i searched and searched before sending this.)
so, i have two servers (both mavericks). on server-a, we have an excel file (excel-a) that a single user has access to, read-and-write. she works in it all day long. saving as she goes.
we want all the other users (about 10) to have read-only access. this does not seem to work using standard os x permissions and acl's. so i had the brilliant idea to buy hazel (just for this!) copy a copy (excel-b) over to server-b whenever the original (excel-a) was newer than the copy (excel-b).
this seems to work anywhere from 1-3 days until one of the following happens:
• hazel won't copy (excel-a)
• hazel copies a copy that is "corrupt" (generally a zero k file)
• no one can open what's on the target.
• occasionally, the connection will drop (but i think that's only happened once in a month).
does anyone have any advice?
i think this might be getting into applescript or shell land, where i don't do so hot. so, please talk slowly and help me keep my hands on the rail?
thanks!
(i searched and searched before sending this.)
so, i have two servers (both mavericks). on server-a, we have an excel file (excel-a) that a single user has access to, read-and-write. she works in it all day long. saving as she goes.
we want all the other users (about 10) to have read-only access. this does not seem to work using standard os x permissions and acl's. so i had the brilliant idea to buy hazel (just for this!) copy a copy (excel-b) over to server-b whenever the original (excel-a) was newer than the copy (excel-b).
this seems to work anywhere from 1-3 days until one of the following happens:
• hazel won't copy (excel-a)
• hazel copies a copy that is "corrupt" (generally a zero k file)
• no one can open what's on the target.
• occasionally, the connection will drop (but i think that's only happened once in a month).
does anyone have any advice?
i think this might be getting into applescript or shell land, where i don't do so hot. so, please talk slowly and help me keep my hands on the rail?

thanks!