Return the User to the Calling Page - doesn't work

Question

Hello All,
I set up the "Issue tracker" tutorial to get in tuch with the apex (htmldb vers. 2.0)
All is working well but: Return the User to the Calling Page -> doesn't work. I performed all steps as descriped in the tutorial (iclusive the '.' on the &P7_PREV_PAGE ;-) ).
I use my own aplication at home and followed all the instruction steps few times but it does not work. Can you help me please?
Do I have to install something more?
In the Branch section: * 1: Go To Page &P7_PREV_PAGE. (Unconditional)
In the Item section: 90: P7_PREV_PAGE Hidden
In the Button section for cancel Button: &P7_PREV_PAGE.
Here is the description of the function in the tutorial:
Because this Create/Edit page will be called from several places, when users finish with the display they should return to the calling page. To accomplish this, you create an item and change the branch on this page. Every time this page is called, the item must be set with the number of the calling page.
To create a hidden item:
1. Under Items, click the Create icon.
2. For Select Item Type, select Hidden and click Next.
3. For Display Position and Name:
1. For Item Name, enter:
P7_PREV_PAGE
2. For Region, select Issue Identification.
3. Click Next.
4.
Click Create Item.
Next, edit the Cancel button.
5. Under Buttons, select Cancel.
6. Scroll down to Optional URL Redirect.
7. In Page, enter:
&P7_PREV_PAGE.
Note the period at the end.
8. Click Apply Changes.
Next, edit the branch.
9. Under Action, enter the following in Page:
&P7_PREV_PAGE.
10. Click Apply Changes.
All steps are done but I still got the message: Error ERR-1016 Application "106" Page "0" not found (requested language="de")
OK
I move the mousepointer over the cancel button: javascript:redirect('f?p=106:0:5265993428922076876::NO:::')
Thank you for helping me!
best regards Thorsten

Answer 1

All,
I haven't looked at that tutorial for quite a while but just gave it a quick look.
Further down in the tutorial, it directs you to set the value of P7_PREV_PAGE, under Add Functionality to Support Adding Multiple Issues Sequentially - have you done that? There is also a mention that there is more branching to be done - "The branch you just created is looking for a value in P7_PREV_PAGE. Since the page was not called from another page, the value has not been set. You need to fix that next." It goes on to have you define that value from other places.
Can you describe what you are doing when you get the error? There could be something missing from the tutorial. A way around it would be to create a default value for P7_PREV_PAGE so that if it is not set, a default page will be used.
-- Sharon