I tried a setup like you’re explaining that import both precompiled qactions and that’s working fine. I have below simple qactions (in that order in xml):
QAction id=”9001″ encoding=”csharp” name=”Precompiled QAction Library” options=”precompile” :
namespace Skyline.Protocol.Library
{
namespace EoM.Alerts
{
public static class Alert
{
public static int Calculate(int a, int b)
{
return a + b;
}
}
}
}

QAction id=”92″ name=”Precompiled Code2″ encoding=”csharp” options=”precompile” dllImport=”[ProtocolName].[ProtocolVersion].QAction.9001.dll” :
namespace Skyline.Protocol
{
namespace AlertsTables
{
using System;
using Skyline.DataMiner.Scripting;
using Skyline.Protocol.Library.EoM.Alerts;

public class CustomTest
{
private int partA;
private int partB;
public CustomTest(int a, int b)
{
partA = a;
partB = b;
}

public int Calc()
{
return Alert.Calculate(partA, partB);
}
}
}
}

QAction id=”9003″ name=”Entering third” encoding=”csharp” triggers=”9003″ dllImport=”[ProtocolName].[ProtocolVersion].QAction.92.dll;[ProtocolName].[ProtocolVersion].QAction.9001.dll”:
using System;
using Skyline.Protocol.AlertsTables;
using Skyline.Protocol.Library.EoM.Alerts;
using Skyline.DataMiner.Scripting;

public class QAction
{
///
/// Change Comm
///
/// Link with Skyline DataMiner
public void Run(SLProtocol protocol)
{
CustomTest test = new CustomTest(1, 2);
int result = test.Calc();
int second = Alert.Calculate(3, 4);
protocol.Log(8,5,”result is ” + Convert.ToString(result) + ” and ” + Convert.ToString(second));
}
}

Triggering 9003 logs the result as expected.
If you’re using DIS then it will probably give a better insight if something is showing errors in the code