ProGet crashing

Hello.
I have a problem with ProGet crashing consistently while accessing the one and only nuget feed.
The server is a win2012R2. I use the bundled webserver and db.
The only help I have found is in three errors in the event log:

Any help is much appreciated. ProGet is not usable for me as it is now.

Thanks
Niklas

First one (ASP.NET):

An unhandled exception occurred and the process was terminated.

Application ID: ProGet.Service.exe

Process ID: 4476

Exception: System.InvalidOperationException

Message: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.

StackTrace:    at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.Open()
   at Inedo.Data.SqlServerDataFactory.CreateConnection()
   at Inedo.Data.SqlServerDataFactory.CreateCommand(String storedProcName, IEnumerable`1 parameters)
   at Inedo.Data.SqlServerDataFactory.ExecuteDataSet(String storedProcName, String[] tableNames, IList`1 parameters)
   at Inedo.ProGet.Data.StoredProcedures.Feeds_BeginSync.Execute()
   at Inedo.ProGet.Service.MyGetSyncExecuter.Execute()
   at Inedo.TimedExecuterBase.ExecuteMethodHost(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.TimerQueueTimer.CallCallback()
   at System.Threading.TimerQueueTimer.Fire()
   at System.Threading.TimerQueue.FireNextTimers()

The second (.NET runtime):
Application: ProGet.Service.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.InvalidOperationException
Stack:
at Inedo.TimedExecuterBase.ExecuteMethodHost(System.Object)
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.TimerQueueTimer.CallCallback()
at System.Threading.TimerQueueTimer.Fire()
at System.Threading.TimerQueue.FireNextTimers()

The third:
Faulting application name: ProGet.Service.exe, version: 3.5.3.24, time stamp: 0x54ee4bfd
Faulting module name: KERNELBASE.dll, version: 6.3.9600.17415, time stamp: 0x54505737
Exception code: 0xe0434352
Fault offset: 0x0000000000008b9c
Faulting process id: 0x128c
Faulting application start time: 0x01d08e891d668657
Faulting application path: C:\Program Files\ProGet\Service\ProGet.Service.exe
Faulting module path: C:\Windows\system32\KERNELBASE.dll
Report Id: 881602a1-fa7c-11e4-80d6-00505685765d
Faulting package full name:
Faulting package-relative application ID:

Product: ProGet
Version: 3.5.3

It should be "the one and only npm feed" above. Sorry.

I might also add that the feed is working for a while. It's crashing every 5 minutes or so if used.

Based on the symptom, this issue was resolved in 3.5.4 as PG-356 - FIX: SQL connections for some stored procedure calls are sometimes leaked.

I can't believe I missed that.
I upgraded and that problem is gone but with new issues. Will open a separate question for that problem.

Suggestion: How about adding a new tag npm?

Thanks
Niklas