I tried jumping from 1.506 to 1.525. The upgrade went fine and was able to load again, however, all builds were having issues. At the beginning of every build I would see:

Started by an SCM change
ln 2013-08-05_07-31-57 F:\jenkins\jobs\ExampleJob\builds\107 failed
hudson.util.jna.WinIOException: Failed to create a symlink F:\jenkins\jobs\ExampleJob\builds\107 to 2013-08-05_07-31-57 error=5:Access is denied
at hudson.util.jna.Kernel32Utils.createSymbolicLink(Kernel32Utils.java:92)
at hudson.Util.createSymlink(Util.java:1049)
at hudson.model.Run.execute(Run.java:1591)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:247)

But then it goes on to build the job successfully, and then at the end I see:

Archiving artifacts
Processing tests results in file(s) local\TestResults\UnitTestResults.trx,local\TestResults\IntegrationTestMSSQLResults.trx
local\TestResults\UnitTestResults.trx
ln builds\lastSuccessfulBuild F:\jenkins\jobs\ExampleJobs\lastSuccessful failed
hudson.util.jna.WinIOException: Failed to create a symlink F:\jenkins\jobs\ExampleJob\lastSuccessful to builds\lastSuccessfulBuild error=5:Access is denied
at hudson.util.jna.Kernel32Utils.createSymbolicLink(Kernel32Utils.java:92)
at hudson.Util.createSymlink(Util.java:1049)
at hudson.model.AbstractBuild.createSymlink(AbstractBuild.java:494)
at hudson.model.AbstractBuild.access$700(AbstractBuild.java:105)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:728)
at hudson.model.Run.execute(Run.java:1618)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:247)
ln builds\lastStableBuild F:\jenkins\jobs\ExampleJob\lastStable failed
hudson.util.jna.WinIOException: Failed to create a symlink F:\jenkins\jobs\ExampleJob\lastStable to builds\lastStableBuild error=5:Access is denied
at hudson.util.jna.Kernel32Utils.createSymbolicLink(Kernel32Utils.java:92)
at hudson.Util.createSymlink(Util.java:1049)
at hudson.model.AbstractBuild.createSymlink(AbstractBuild.java:494)
at hudson.model.AbstractBuild.access$700(AbstractBuild.java:105)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:729)
at hudson.model.Run.execute(Run.java:1618)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:247)
Email was triggered for: Success

So I see that it says access denied. But how could it be access denied, when it continues to build just fine? Was there an extra section added where I need to enter credential information for this?

Thoughts?