HttpCompileException occurs at random times

[mark_me]

Hi, I am getting System.Web.HttpCompileException from my application randomnly. it gets fixed randomnly too. sometimes i refresh the IIS and it starts working, other times, i change timestamp on the control mentioned in exception and my application starts working. My code looks like:

Private utilityMethods As ASP.mywebsite_utilitymethods_ascx 'Declaration , This line is throwing error. Note this is global declaration of the reference

after the above line i create the object and use it to call methods in the utilitymethods control. The Products page has this declaration. Sometimes when i make changes to Products page and copy it to the testbox, this exception starts happening: Please not that line 55 is the declaration line that i have copied above Message: System.Web.HttpCompileException: D:\MyWebsite\Products.ascx.vb(55): error BC30002: Type 'ASP.mywebsite_utilitymethods_ascx' is not defined. at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResult(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at Website.MyWebsite.RadTabStrip.RadMultiPage1_PageViewCreated(Object sender, RadMultiPageEventArgs e) in D:\Websites\RadTabStrip.ascx.vb:line 906 at Telerik.Web.UI.RadMultiPage.OnPageViewCreated(RadMultiPageEventArgs eventArgs) at Telerik.Web.UI.RadMultiPage.AddedControl(Control control, Int32 index) at System.Web.UI.ControlCollection.Add(Control child) at Telerik.Web.UI.RadPageViewCollection.Add(RadPageView pageView) at MyWebsite.RadTabStrip.AddPageView(RadTab tab) in website\RadTabStrip.ascx.vb:line 1074 at MyWebsite.RadTabStrip.Page_Load(Object sender, EventArgs e) in D:\Websites\RadUCTabStrip.ascx.vb:line 668 Please note that the application is working. This happens sometimes when i make changes to Products page. When this happens, i change timestamp on utility methods or radtabstip page and copy it over and it starts working. I know my statement is re