PWA 2010 error when i try to open the project name in Project Center

Question

Hi, this is my first post.
Im having a trouble with our Project Server, when i try to open the project name in Project Center it gives me an error like this:
ProjectServerError(s) LastError=GeneralUnhandledException Instructions: Pass this into PSClientError constructore to access all error information 
Stack Trace: 
[SoapException: ProjectServerError(s) LastError=GeneralUnhandledException Instructions: Pass this into PSClientError constructore to access all error information]
   Microsoft.Office.Project.Server.WebServiceProxy.PWA.WorkflowGetProjectDrilldownInformation(Guid projectUid, String userPropToClear, Boolean bCheckOutProject) +401
   Microsoft.Office.Project.PWA.ApplicationPages.ProjectDrillDownPage.OnLoad(EventArgs e) +822
   System.Web.UI.Control.LoadRecursive() +66
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428
 And also when i try to open the document that associated with the project in project center it gives me an error like this :
Exception Details: System.Web.Services.Protocols.SoapException: ProjectServerError(s) LastError=GeneralUnhandledException Instructions: Pass this into PSClientError constructore
to access all error information
Source Error:
Line 12: bool LoadLinkItemsPage = (Request.QueryString["Task"] != null);
Line 13:
Line 14: ProjectWSSInfoDataSet ds = PJContext.Current.PSI.WssInteropWebService.ReadWssData(ProjectGuid);
Line 15: if (ds != null && ds.ProjWssInfo.Rows.Count > 0)
Line 16: {
Source File: c:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\PWA\COMMON\wssnav.aspx    Line: 14 
Stack Trace:
[SoapException: ProjectServerError(s) LastError=GeneralUnhandledException Instructions: Pass this into PSClientError constructore to access all error information]
Microsoft.Office.Project.Server.WebServiceProxy.WssInterop.ReadWssData(Guid projectUID) +377
ASP._layouts_pwa_common_wssnav_aspx.PJWebPage_OnLoad(EventArgs e) in c:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\PWA\COMMON\wssnav.aspx:14
Microsoft.Office.Project.PWA.PJWebPage.OnLoad(EventArgs e) +67
System.Web.UI.Control.LoadRecursive() +66
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428
has anyone experienced this
before and might be able to help? Thank you!

Answer 1

For what it's worth, given the age of this question, I've found that stopping and starting the Project Application Service on each server via Central Admin is less disruptive to the rest of your farm when using Project Server in a larger SharePoint
farm.
IISRESET will cause active user sessions to be disconnected and could result in lost data.
I also found that recycling the app pool associated with my Project Server web application in IIS and restarting the web site did not resolve this situation so the IISRESET is not a guaranteed fix.
Targeting only the Project Application Service from Central Admin removes this minor risk and actually restored access to our Project Sites.
N03L.