Error message in WebGUI after adding fields with EEWB - Class doesn't exist

Question

Hello!
After adding fields to the component BT111H_OPPT within EEWB and BSP_WD_CMPWB I recieved an error message while trying to open an Opportunity in the WebGUI, stating:
Cannot display view MainWindow
An exception has occured
Exception Class CX_SY_DYN_ILLEGAL_CLASS - Method call of IF_BSP_WD_DYN_RT_REP_SUPPORT~GET_URL_PARAMETERS failed; the class ZL_BT111H_O_BSPWDCOMPONEN_IMPL does not exist
Method: CL_BSP_WD_COMPONENT_FACTORY=>GET_REPOSITORY_XML
Source text Row:25
An exception occured during the activation of target view CUBTOpptOverview.MainWindow for the navigation
An exception has occured
Exceptions Class CX_BSP_WD_RUNTIME_ERROR - View CUBTOpptOverview.MainWindow could not be bound
Method: CL_BSP_WD_VIEW_CONTROLLER=>BIND_VIEW
Source text Row:162
Has any one an idea, if this could be a bug or what went wrong? I am especially irritated, that it seems, that class was not created. After all I never changed any tables or anything in the background manually. I just used the standard tool EEWB, nothing else.
Many thanks for any kind of help!
By the way, I tried to go back all the steps I took previously to, kind of "un-do" my error, but I was not able to delete all created extensions, due to a another error - but that's a different story, or isn't it?
Cheers,
Marek

Answer 1

Hello Experts,
I know my question was a tricky one and no-one was able to help me from this forum. That's why I would like to share with you the solution I just recieved from SAP:
Although all classes that were created whilst extending the component BT111H_OPPT were deleted, there still existed a seperate extension definition in ViewCluster BSPWDVC_CMP_EXT still persisted.
I wasn't aware of the fact, that I had to delete that too.
Note: in order to delete ViewCluster, use tx SM34
The problem ist now solved!
Cheers!
Marek