Risolto, se volete utilizzare i puntatori modificate il Web.config in questo modo:
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" compilerOptions="/unsafe" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>