# Migration guide (2.0 =\> 2.1)

**URL:** <https://community.gatling.io/t/migration-guide-2-0-2-1/2084>\
**Category:** Gatling (Open-Source)\
**Created:** [March 4, 2015, 2:20pm UTC](https://community.gatling.io/t/migration-guide-2-0-2-1/2084 "2015-03-04T14:20:46Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![fugmag](https://avatars.discourse-cdn.com/v4/letter/f/d78d45/32.png) [@fugmag](https://community.gatling.io/u/fugmag)\
**Post date:** [March 4, 2015, 2:20pm UTC](https://community.gatling.io/t/migration-guide-2-0-2-1/2084/1 "2015-03-04T14:20:46Z")

</div>

I am upgrading from 2.0.1 to 2.1.4.

I have updated to scala 2.11 and the otter things in the migration guide is accounted for.

I have also copiy/pasted the enigine, ideapathhelper and recorder files into the old ones.

However when running the Engine, i get the error:

Error:(5, 38) Reference to method getClassLoader in class Class should not have survived past type checking,  
it should have been processed and eliminated during expansion of an enclosing macro.  
val gatlingConfUrl: Path = getClass.getClassLoader.getResource(“gatling.conf”).toURI  
^

Clicking on it, the IDEAPathHelper I get the newly pasted code:

```auto
import java.nio.file.Path
import io.gatling.core.util.PathHelper._

object IDEPathHelper {
 val gatlingConfUrl: Path = getClass.getClassLoader.getResource("gatling.conf").toURI
 val projectRootDir = gatlingConfUrl.ancestor(3)
 val mavenSourcesDirectory = projectRootDir / "src" / "test" / "scala"
 val mavenResourcesDirectory = projectRootDir / "src" / "test" / "resources"
 val mavenTargetDirectory = projectRootDir / "target"
 val mavenBinariesDirectory = mavenTargetDirectory / "test-classes"
 val dataDirectory = mavenResourcesDirectory / "data"
 val bodiesDirectory = mavenResourcesDirectory / "bodies"
 val recorderOutputDirectory = mavenSourcesDirectory
 val resultsDirectory = mavenTargetDirectory / "results"
 val recorderConfigFile = mavenResourcesDirectory / "recorder.conf"
}

An IntelliJ marsk up 

getClass.getClassLoader

Any tips in solving this issue?

getClass.getClassLoader

```

---

<div class="post-metadata">

**Author:** ![fugmag](https://avatars.discourse-cdn.com/v4/letter/f/d78d45/32.png) [@fugmag](https://community.gatling.io/u/fugmag)\
**Post date:** [March 4, 2015, 2:31pm UTC](https://community.gatling.io/t/migration-guide-2-0-2-1/2084/2 "2015-03-04T14:31:59Z")

</div>

And the migration guide says:

If you choose the latter, don’t forget to fix the `simulationPackage` in `Recorder.scala`.

What does it mean?  
Where does it need to point in:

```auto
props.simulationPackage("${package}")

```

---

<div class="post-metadata">

**Author:** ![fugmag](https://avatars.discourse-cdn.com/v4/letter/f/d78d45/32.png) [@fugmag](https://community.gatling.io/u/fugmag)\
**Post date:** [March 4, 2015, 2:38pm UTC](https://community.gatling.io/t/migration-guide-2-0-2-1/2084/3 "2015-03-04T14:38:03Z")

</div>

To answer my own question:  
I changed the

```auto
val gatlingConfUrl: Path = getClass.getClassLoader.getResource("gatling.conf").toURI

to 
val gatlingConfUrl: Path = getClass.getClassLoader.getResource("gatling.conf").getPath

```

and the error is not there anymore.

And obviously the

```auto
props.simulationPackage("${package}")

```

should point to where I want to place my recroded simulations.

Sorry for being to fast with asking the question.

My problem is now, the only error msg left:

Error:scalac: bad symbolic reference. A signature in package.class refers to type compileTimeOnly  
in package scala.annotation which is not available.  
It may be completely missing from the current classpath, or the version on  
the classpath might be incompatible with the version used when compiling package.class.

Any tips on what this is caused by?

Cheers