NotLoggedInException with visual studio 2005

Hi at all
when I try to sharing my solution, VS 2005 Rational Team Concert plug in generates the exception: "CRJAZ1244I Not logged in to the repository at URL".
This always happens; for example in "Team Artifacts" windows, if I try to select "Show baselines" on my component in "My Repository Workspaces", this exception happen, etc. I think that problem is the login on the team, but I when receive the team invitation, I do not understand how accept because in visual studio help file, under "Accepting the team invitation" there is this description: "Follow the instructions contained in the e-mail.". Ok, I follow the suggestion and go to read the e-mail. In it there are this "instructions for use": "Use File>Accept Team Invitation within the Rational Team Concert client to open the Accept Team Invitation dialog.
Copy the invitation below and paste into the Accept Invitation text field.". Ok, It's a shame that under "File" menu there is not any "Accept Team Invitation" menu entry! how to accept team invitation in VS2005?

The sharing error stacktrace:

Error message:
Error Sharing
Exception type:
com.ibm.team.repository.TeamRepositoryException
Exception message:
CRJAZ1244I Not logged in to the repository at URL "https://<my>:9443/jazz/".
Exception stack trace:
at com.ibm.team.foundation.service.WebRequestInvocationProxy.Invoke(IMessage myIMessage) in C:\RTC_BUILDS\I20081205-1832\Foundation\ServiceInterfaceProxy\WebRequestInvocationProxy.cs:line 75
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at com.ibm.team.filesystem.client.rest.IFilesystemRestClient.postShare(ParmsShare parms, IProgressMonitor progress)
at com.ibm.team.filesystem.client.FilesystemClient.Share(String copyFileArea, ParmsShareRequest[] shareRequests, IProgressMonitor monitor) in C:\RTC_BUILDS\I20081205-1832\Filesystem\FilesystemClient\FilesystemClient.cs:line 563
at com.ibm.team.filesystem.client.FilesystemClient.ShareToComponent(String copyFileArea, ITeamRepository repository, String workspaceItemId, Component component, String shareDir, ParmsJazzIgnoreRule[] ignoreRules, IProgressMonitor monitor) in C:\RTC_BUILDS\I20081205-1832\Filesystem\FilesystemClient\FilesystemClient.cs:line 549
at com.ibm.team.filesystem.client.FilesystemClient.ShareToComponent(String copyFileArea, ITeamRepository repository, Workspace workspace, Component component, String shareDir, ParmsJazzIgnoreRule[] ignoreRules, IProgressMonitor monitor) in C:\RTC_BUILDS\I20081205-1832\Filesystem\FilesystemClient\FilesystemClient.cs:line 491
at com.ibm.team.scm.ui.SccProviderService.RunShareOperation(ShareArguments args, IProgressMonitor monitor) in C:\RTC_BUILDS\I20081205-1832\SCM\ScmUI\SccProviderService.cs:line 1548
at com.ibm.team.foundation.core.operationrunner.internalimpl.BackgroundWorkerImpl`2.OnDoWork(DoWorkEventArgs args) in C:\RTC_BUILDS\I20081205-1832\Foundation\Core\operationrunner\internalimpl\BackgroundWorkerImpl.cs:line 93
Status code:
500
Remote exception type:
com.ibm.team.repository.common.NotLoggedInException
Request URI:
http://localhost:44181/service/com.ibm.team.filesystem.client.rest.IFilesystemRestClient/Share?shareRequests={"workspace":{"repositoryUrl":"https:\/\/<my>:9443\/jazz\/","workspaceItemId":"_GlyznNUmEd6a_6995BQ24w"},"componentItemId":"_Gjj-9dUmEd6a_6995BQ24w","parentFolderItemId":"_Gjj--dUmEd6a_6995BQ24w","foldersToShare":}
Remote stack trace: