Like some other posters I am having difficulties with the 0.9.7.3 version of YPOPS. I had been using the last official release of 0.9.5.x until I began having difficulty getting my emails. Reading some of the posts, it looked like 0.9.7.3 was the answer but I cannot keep it running when Outlook 2003 tries to download email. (I'm running Vista-32 Home Premium SP1). YPOPS starts fine but as soon as the fetch email occurs, YPOPS crashes with the error message "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available."
Advanced LOG FILE:
[03/19/09 14:08:27] YPOPs! v0.9.7.3 started successfully
[03/19/09 14:08:27] =========================================================================
[03/19/09 14:08:27] YPOPs! Version 0.9.7.3
[03/19/09 14:08:27] Configuration:
[03/19/09 14:08:27] Log Mode = Advanced (1)
[03/19/09 14:08:27] Use Proxy = 0, NTLM=0, HTTP Proxy = -:80, HTTPS Proxy = -:80
[03/19/09 14:08:27] Max Emails = 40, Leave as unread = 0
[03/19/09 14:08:27] Empty Trash = 0, Empty Bulk = 0
[03/19/09 14:08:27] Download Inbox = 1, Download BulkMail = 0
[03/19/09 14:08:27] Email Category = Unread
[03/19/09 14:08:27] Proxy Auth = 0, NTLM=0, Username = -, Password = -
[03/19/09 14:08:27] Autostart = 1
[03/19/09 14:08:27] Network IP = 127.0.0.1, POP3 Port = 110, SMTP Enable = 1, SMTP Port = 25
[03/19/09 14:08:27] Save Sent Email = 1, Enable UIDL = 1, Ignore Exact Size = 1, Hide Tray Icon = 0
[03/19/09 14:08:27] Apply Limit to Message List = 1, Cookie Timeout = 12000
[03/19/09 14:08:27] User Agent = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
[03/19/09 14:08:27] =========================================================================
[03/19/09 14:09:06] =========================================================================
[03/19/09 14:09:06] YPOPs! Version 0.9.7.3
[03/19/09 14:09:06] Configuration:
[03/19/09 14:09:06] Log Mode = Advanced (1)
[03/19/09 14:09:06] Use Proxy = 0, NTLM=0, HTTP Proxy = -:80, HTTPS Proxy = -:80
[03/19/09 14:09:06] Max Emails = 40, Leave as unread = 0
[03/19/09 14:09:06] Empty Trash = 0, Empty Bulk = 0
[03/19/09 14:09:06] Download Inbox = 1, Download BulkMail = 0
[03/19/09 14:09:06] Email Category = Unread
[03/19/09 14:09:06] Proxy Auth = 0, NTLM=0, Username = -, Password = -
[03/19/09 14:09:06] Autostart = 1
[03/19/09 14:09:06] Network IP = 127.0.0.1, POP3 Port = 110, SMTP Enable = 1, SMTP Port = 25
[03/19/09 14:09:06] Save Sent Email = 1, Enable UIDL = 1, Ignore Exact Size = 1, Hide Tray Icon = 0
[03/19/09 14:09:06] Apply Limit to Message List = 1, Cookie Timeout = 12000
[03/19/09 14:09:06] User Agent = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
[03/19/09 14:09:06] =========================================================================
[03/19/09 14:09:06] Sending POP3 response to socket 484
[03/19/09 14:09:06] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:06] Starting POP3 session for "user_name".
[03/19/09 14:09:06] <user_name> Password received from client.
[03/19/09 14:09:06] <user_name> INBOX added to list of folders to analyze
[03/19/09 14:09:06] <user_name> Login to Yahoo! Mail succeeded
[03/19/09 14:09:06] IMAP Response Dump: 2 OK LOGIN completed
[03/19/09 14:09:06] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:06] <user_name> Command received from email client: STAT
[03/19/09 14:09:06] STAT Response: +OK 2 22458
[03/19/09 14:09:06] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:06] <user_name> Command received from email client: UIDL
[03/19/09 14:09:06] UIDL response sent
[03/19/09 14:09:06] Response Dump:

null)
[03/19/09 14:09:06] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:06] <user_name> Command received from email client: LIST
[03/19/09 14:09:06] POP3 response for list OK
[03/19/09 14:09:06] POP3 Response Dump: +OK scan listing follows
1 11202
2 11256
.
[03/19/09 14:09:06] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:07] <user_name> Command received from email client: DELE 1
[03/19/09 14:09:07] DELE response sent
[03/19/09 14:09:07] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:07] <user_name> Command received from email client: DELE 2
[03/19/09 14:09:07] DELE response sent
[03/19/09 14:09:07] <user_name> Sending POP3 response to socket 484
[03/19/09 14:09:07] <user_name> Command received from email client: QUIT
[03/19/09 14:09:07] IMAP Request Dump: SELECT Inbox
[03/19/09 14:09:07] IMAP Response Dump: * 125 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 1] UIDs valid
* OK [UIDNEXT 77685] Predicted next UID
* FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft)] Permanent flags
6 OK [READ-WRITE] SELECT completed; now in selected state
[03/19/09 14:09:07] IMAP Request Dump: copy 77682 Trash
[03/19/09 14:09:07] IMAP Response Dump: 7 OK [COPYUID 4 77684 77687] COPY completed
[03/19/09 14:09:07] IMAP Request Dump: store 77682 +FLAGS (\Deleted)
[03/19/09 14:09:07] IMAP Response Dump: 8 OK STORE completed