Web IDE "Could not set breakpoint. The SQL Debugging is now not available..."

Hello All,

I know that this problem was already mentioned many times, but I still can't get debugger in WebIDE running.

1. My HANA is 1.00.112.02.1459851171

2. I have debugger parameter set to "true" in xsengine.ini

3. I have enabled developer_mode with statement: alter system alter configuration ('xsengine.ini','SYSTEM') set ('httpserver','developer_mode')='true' with reconfigure;

4. My user has roles: sap.hana.xs.ide.roles::Developer, EditorDeveloper, CatalogDeveloper, SecurityAdmin and TraceViewer

I believe that I have done everything from this article:

HANA XS development with the SPS07 Web IDE (focus on debugging)

But still:

[16:23:41] (SQL Debugger) Could not set breakpoint. The SQL Debugging is now not available...

Please help.