Hi, I'm upgrading from 8.18.6 to Mendix 9.2.0 (I also tried first to update to 9.05 but got the same error). I followed the Moving from 8 to 9 docs guide. I updated all the app store modules (including UnitTesting where the problem occurs according to the error) and I also updated Atlas (to Atlas_Core, Native Content and Web Content). I have an issue with java compliation. How can I fix this problem? Buildfile: C:\Mendix\SchipholStarterApp-UpdateTo9\deployment\build_core.xml compile: [javac] Compiling 315 source files to C:\Mendix\SchipholStarterApp-UpdateTo9\deployment\run\bin [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\RemoteApiServlet.java:20: error: package objecthandling does not exist [javac] import objecthandling.XPath; [javac] ^ [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:35: error: package objecthandling does not exist [javac] import objecthandling.XPath; [javac] ^ [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\RemoteApiServlet.java:169: error: cannot find symbol [javac] for(TestSuite suite : XPath.create(context, TestSuite.class).all()) { [javac] ^ [javac] symbol: variable XPath [javac] location: class RemoteApiServlet.TestSuiteRunner [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\RemoteApiServlet.java:180: error: cannot find symbol [javac] for(UnitTest test : XPath.create(context, UnitTest.class) [javac] ^ [javac] symbol: variable XPath [javac] location: class RemoteApiServlet.TestSuiteRunner [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:216: error: cannot find symbol [javac] for(UnitTest test : XPath.create(context, UnitTest.class).eq(UnitTest.MemberNames.UnitTest_TestSuite, testSuite).all()) { [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:418: error: cannot find symbol [javac] res = XPath.create(context, UnitTest.class) [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:532: error: cannot find symbol [javac] TestSuite testSuite = XPath.create(context, TestSuite.class).findOrCreate(TestSuite.MemberNames.Module, module); [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:539: error: cannot find symbol [javac] XPath.create(context, TestSuite.class).not().hasReference(UnitTest.MemberNames.UnitTest_TestSuite, UnitTest.entityName).close().deleteAll(); [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:548: error: cannot find symbol [javac] for(UnitTest test : XPath.create(context, UnitTest.class) [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:581: error: cannot find symbol [javac] for(UnitTest test : XPath.create(context, UnitTest.class) [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] C:\Mendix\SchipholStarterApp-UpdateTo9\javasource\unittesting\TestManager.java:590: error: cannot find symbol [javac] testSuite.setTestCount(XPath.create(context, UnitTest.class).eq(UnitTest.MemberNames.UnitTest_TestSuite, testSuite).count()); [javac] ^ [javac] symbol: variable XPath [javac] location: class TestManager [javac] Note: Some input files use or override a deprecated API. [javac] Note: Recompile with -Xlint:deprecation for details. [javac] 11 errors BUILD FAILED C:\Mendix\SchipholStarterApp-UpdateTo9\deployment\build_core.xml:29: Compile failed; see the compiler error output for details. Total time: 4 seconds