Hello, Linc: Thanks for trying to help. I saw messages like this on other threads, and noticed that they seldom get a reply. Maybe it's because it includes very detailed info on how to open Console, but then not very detailed information of how to identify "messages from the last installation or update attempt" that aren't "repetitions of the same message"? There's a warning to be wary of releasing private information; while I can recognize my name and what may be my IP address, I haven't the slightest idea of what other private information might be buried in these messages. Finally, there's no explanation of WHY this information will be useful.
Taking a guess as to what you're looking for, here is a chunk from the bottom of the install log right after I tried the app store again. Interestingly, it continues to add similar content even after I quit the app store.
Sep 3 19:49:25 XXXXXXX Software Update[21628]: Can't load distribution from http://XXXXXXXXXXXXXX/content/downloads/13/27/041-0513/GXwmVgVgQsPg575gxwM6w3nRn nkpH3rXZn/041-0513.English.dist: Error Domain=NSURLErrorDomain Code=-1100 "The operation couldn’t be completed. (NSURLErrorDomain error -1100.)" UserInfo=XXXXXXXXXX {PKURLErrorResponseHeaders=<CFBasicHash 0x7fe86220b370 [0x7fff7452d190]>{type = immutable dict, count = 5,
entries =>
0 : Case Insensitive Key: Content-Type = <CFString 0x7fe862212b40 [0x7fff7452d190]>{contents = "text/html; charset=iso-8859-1"}
3 : Case Insensitive Key: Content-Length = <CFString 0x7fe862210940 [0x7fff7452d190]>{contents = "360"}
4 : Case Insensitive Key: Connection = <CFString 0x7fe8622049e0 [0x7fff7452d190]>{contents = "close"}
5 : Case Insensitive Key: Server = <CFString 0x7fe86220d6d0 [0x7fff7452d190]>{contents = "Apache/2.2.21 (Unix)"}
6 : Case Insensitive Key: Date = <CFString 0x7fe86220ed30 [0x7fff7452d190]>{contents = "Tue, 04 Sep 2012 00:49:25 GMT"}
}
, PKURLErrorStatusCode=404, NSErrorFailingURLStringKey=XXXXXXXXXXXXXXXXXXXXXXXXX/content/downloads/13/27/04 1-0513/GXwmVgVgQsPg575gxwM6w3nRnnkpH3rXZn/041-0513.English.dist}