when im finishing to attach the project it just finish without a error message it just says nothing as error.
ill copy the messages from a few trys

17/01/2006 09:39:00 a.m.||Starting BOINC client version 5.2.13 for windows_intelx86
17/01/2006 09:39:00 a.m.||libcurl/7.14.0 OpenSSL/0.9.8 zlib/1.2.3
17/01/2006 09:39:00 a.m.||Data directory: C:Program FilesBOINC
17/01/2006 09:39:00 a.m.||Processor: 1 GenuineIntel Intel(R) Pentium(R) 4 CPU 2.40GHz
17/01/2006 09:39:00 a.m.||Memory: 509.98 MB physical, 1.22 GB virtual
17/01/2006 09:39:00 a.m.||Disk: 37.26 GB total, 25.19 GB free
17/01/2006 09:39:00 a.m.||No general preferences found - using BOINC defaults
17/01/2006 09:39:01 a.m.||Remote control not allowed; using loopback address
17/01/2006 09:39:01 a.m.||This computer is not attached to any projects.
17/01/2006 09:39:01 a.m.||There are several ways to attach to a project:
17/01/2006 09:39:01 a.m.||1) Run the BOINC Manager and click Projects.
17/01/2006 09:39:01 a.m.||2) (Unix/Mac) Use boinc_cmd --project_attach
17/01/2006 09:39:01 a.m.||3) (Unix/Mac) Run this program with the -attach_project command-line option.
17/01/2006 09:39:01 a.m.||Visit http://boinc.berkeley.edu for more information
17/01/2006 09:39:11 a.m.||Fetching config info from https://boinc.bakerlab.org/rosetta/get_project_config.php
17/01/2006 09:39:33 a.m.|https://boinc.bakerlab.org/rosetta/|Master file download succeeded
17/01/2006 09:39:33 a.m.|https://boinc.bakerlab.org/rosetta/|Sending scheduler request to https://boinc.bakerlab.org/rosetta_cgi/cgi
17/01/2006 09:39:33 a.m.|https://boinc.bakerlab.org/rosetta/|Reason: Requested by user
17/01/2006 09:39:33 a.m.|https://boinc.bakerlab.org/rosetta/|Requesting 8640 seconds of new work
17/01/2006 09:39:35 a.m.|https://boinc.bakerlab.org/rosetta/|Scheduler request to https://boinc.bakerlab.org/rosetta_cgi/cgi failed with a return value of 417
17/01/2006 09:39:35 a.m.|https://boinc.bakerlab.org/rosetta/|No schedulers responded
17/01/2006 09:39:35 a.m.|https://boinc.bakerlab.org/rosetta/|Couldn't connect to URL https://boinc.bakerlab.org/rosetta/.Please check URL.
17/01/2006 09:39:35 a.m.|https://boinc.bakerlab.org/rosetta/|Resetting project
17/01/2006 09:39:35 a.m.||request_reschedule_cpus: exit_tasks
17/01/2006 09:39:35 a.m.|https://boinc.bakerlab.org/rosetta/|Detaching from project
17/01/2006 01:13:53 p.m.||Fetching config info from https://boinc.bakerlab.org/rosetta/get_project_config.php
17/01/2006 01:14:16 p.m.|https://boinc.bakerlab.org/rosetta/|Master file download succeeded
17/01/2006 01:14:16 p.m.|https://boinc.bakerlab.org/rosetta/|Sending scheduler request to https://boinc.bakerlab.org/rosetta_cgi/cgi
17/01/2006 01:14:16 p.m.|https://boinc.bakerlab.org/rosetta/|Reason: Requested by user
17/01/2006 01:14:16 p.m.|https://boinc.bakerlab.org/rosetta/|Requesting 8640 seconds of new work
17/01/2006 01:14:18 p.m.|https://boinc.bakerlab.org/rosetta/|Scheduler request to https://boinc.bakerlab.org/rosetta_cgi/cgi failed with a return value of 417
17/01/2006 01:14:18 p.m.|https://boinc.bakerlab.org/rosetta/|No schedulers responded
17/01/2006 01:14:18 p.m.|https://boinc.bakerlab.org/rosetta/|Couldn't connect to URL https://boinc.bakerlab.org/rosetta/.Please check URL.
17/01/2006 01:14:18 p.m.|https://boinc.bakerlab.org/rosetta/|Resetting project
17/01/2006 01:14:18 p.m.||request_reschedule_cpus: exit_tasks
17/01/2006 01:14:18 p.m.|https://boinc.bakerlab.org/rosetta/|Detaching from project
17/01/2006 01:20:15 p.m.||Fetching config info from https://boinc.bakerlab.org/rosetta/get_project_config.php
17/01/2006 01:20:44 p.m.|https://boinc.bakerlab.org/rosetta/|Master file download succeeded
17/01/2006 01:20:44 p.m.|https://boinc.bakerlab.org/rosetta/|Sending scheduler request to https://boinc.bakerlab.org/rosetta_cgi/cgi
17/01/2006 01:20:44 p.m.|https://boinc.bakerlab.org/rosetta/|Reason: Requested by user
17/01/2006 01:20:44 p.m.|https://boinc.bakerlab.org/rosetta/|Requesting 8640 seconds of new work
17/01/2006 01:20:45 p.m.|https://boinc.bakerlab.org/rosetta/|Scheduler request to https://boinc.bakerlab.org/rosetta_cgi/cgi failed with a return value of 417
17/01/2006 01:20:45 p.m.|https://boinc.bakerlab.org/rosetta/|No schedulers responded
17/01/2006 01:20:45 p.m.|https://boinc.bakerlab.org/rosetta/|Couldn't connect to URL https://boinc.bakerlab.org/rosetta/.Please check URL.
17/01/2006 01:20:45 p.m.|https://boinc.bakerlab.org/rosetta/|Resetting project
17/01/2006 01:20:45 p.m.||request_reschedule_cpus: exit_tasks
17/01/2006 01:20:45 p.m.|https://boinc.bakerlab.org/rosetta/|Detaching from project



SORRY FOR MY ENGLISH AND THANKS

There were an outage for Rosetta on January 17. That's why you can't attach to the project. Hope you have retried and it is solved for you now.

---