I've tried updating as specified in the title, but it fails. I've pasted the end of the log below. I've tried both servers available (US-1 and US-2). Any ideas? 
-- [Installation] ---------------------------------------------------
Download:	C:\Program Files\Stardock\SDCentral\data\public\gc2\production\gc2.xml 0 | Attempt: 1 | -11  Error creating/opening the target file
Download:	C:\Program Files\Stardock\SDCentral\data\public\gc2\production\gc2.xml 0 | Attempt: 2 | -11  Error creating/opening the target file
Download:	C:\Program Files\Stardock\SDCentral\data\public\gc2\production\gc2.xml 0 | Attempt: 3 | -11  Error creating/opening the target file
Server:		Using other server http://sdc1.stardock.com
Download:	C:\Program Files\Stardock\SDCentral\data\public\gc2\production\gc2.xml 0 | Attempt: 1 | -11  Error creating/opening the target file
Download:	C:\Program Files\Stardock\SDCentral\data\public\gc2\production\gc2.xml 0 | Attempt: 2 | -11  Error creating/opening the target file
Download:	C:\Program Files\Stardock\SDCentral\data\public\gc2\production\gc2.xml 0 | Attempt: 3 | -11  Error creating/opening the target file
Result:		Installation failed (12)