Do you have windows rights to create files in the T2 sub folder?  When the links file is run there is a convert Inventory Links to Evo Links button.. that button will appear until it is run once for each company. When that button is pressed it writes to the EvoCOsettings.ini file in the Company sub folder. When the program is run it checks this file to see if it should display the button. This is where I suspect you are getting the error.  You need rights to all the sub folders...
 

try deleting the file. it will recreate it..  EvoCoSettings.ini in the TS folder.

what are the exact steps you do to get the error to happen?
 

I am having this same problem, where you click on the chain link button and it says Unable to write to T2\EvoCoSettings.ini.  We are also having a problem in inventory links if I add a file that has a longer file path name it only shows have of the file path name and wont open anything????  We just upgraded to EVO a couple weeks ago and the links was the main feature we wanted to use, it would be very disappointing to now learn that we cant link things with longer file path names.  Please help.........................................

The Inventory links was my first pass a links. Like the title suggests it is for Inventory Items (only)  and these work in Classic and have a limit of a 60 char path and file name.  The Evo links work line the notes do in the way you can link any thing two anything you want in Evo.. example a video to a WO routing,  packing instructions to a customer so when you print a packing slip the isnstuctions come out with it. etc..   Also the Evo links allow for 255 char path and file names.
 
All the links can be assigned to a grid using SU-A.  There is a section near the top of the SU-A screen for Links & Notes fields. These are the fields that you the users can assign to links or notes to.. So any grid can have any file, website, or what have you, assigned to a unique set of fields on a grid.
 
In short, Evo links replace Inventory links, and you should not be using inventory links if Evo links are turned on.
That said, I still needed to leave the Inventory links entry in IN-B for thoes users who choose not to use Evo links and only want to use the old Inventory links. In IN-B you should use one or the other. Either the Inventory Links field(s) on the screen, or the Evo links Button.

ok... this 2 link option in DBA is creating chaos here.  The link line that is visiable is where everyone is looking and no one is looking at the chain links.
 
so of course if the chain links aren't entered or are incorrect, people think it's DBA instead of input errors.  UGH....  Maybe you could create a blurb that said... EVO LINKS ARE TURNED ON... CLICK THE CHAIN LINK BUTTON.  
 
In any case, is there a quick way to remove all the dba links?
What about a report to verify all the chain link links??
 
Lenette (who is about to leave town for a week long business trip and is going crazy!!!!)

In the backyard in the shed in ANOTHER STATE is more like it.
 
I spent a lot of time cleaning up the DBA links only to realize i have a huge mess with the NOW TURNED ON Evo links.
 
WORST OF ALL.. is this darn EvoCoSetting.ini error that is preventing me from doing work (or even delegating it out).
 
I have changed security settings on our server, on our workstations and have deleted it out and yet, it still appears.  The only way to get past it is to close EVO and reopen.
 
Lenette