making sense of unhandled stack traces: +393, +195...

[Frank]

First, I borrowed the below stack trace from another posting as an
example of the sort of issue I have with my own software. When I see
stack traces like this from my own software, I do not understand what
the +393, +195 numbers are for that come at the end of each line.

Question: Does anyone know what these +###s refer to or how I should
interpret them?

Stack Trace:

[UnauthorizedAcc essException: Access to the path
"C:\WINNT\Micro soft.NET\Framew ork\v1.1.4322\T emporary ASP.NET
Files\riskclien t\f9b11085\d1ce f5aa" is denied.]
System.IO.__Err or.WinIOError(I nt32 errorCode, String str) +393
System.IO.Direc tory.InternalCr eateDirectory(S tring fullPath, String
path)
+632
System.IO.Direc tory.CreateDire ctory(String path) +195
System.Web.Comp ilation.Preserv edAssemblyEntry .DoFirstTimeIni t(HttpContext
context) +85

System.Web.Comp ilation.Preserv edAssemblyEntry .EnsureFirstTim eInit(HttpConte x
t context) +97

System.Web.Comp ilation.Preserv edAssemblyEntry .GetPreservedAs semblyEntry(Htt p
Context context, String virtualPath, Boolean fApplicationFil e) +29
System.Web.UI.T emplateParser.G etParserCacheIt emFromPreserved Compilation()
+91
System.Web.UI.T emplateParser.G etParserCacheIt emInternal(Bool ean
fCreateIfNotFou nd) +148
System.Web.UI.T emplateParser.G etParserCacheIt emWithNewConfig Path()
+125
System.Web.UI.T emplateParser.G etParserCacheIt em() +88
System.Web.UI.A pplicationFileP arser.GetCompil edApplicationTy pe(String
inputFile, HttpContext context, ApplicationFile Parser& parser) +171
System.Web.Http ApplicationFact ory.CompileAppl ication(HttpCon text
context)
+43
System.Web.Http ApplicationFact ory.Init(HttpCo ntext context) +485
System.Web.Http ApplicationFact ory.GetApplicat ionInstance(Htt pContext
context) +170
System.Web.Http Runtime.Process RequestInternal (HttpWorkerRequ est wr)
+414