String index out of range switching to Design mode through HTML

Hi,

I got the error "String index out of range: 5 (Error: INF)" when I press the Design button in HTML mode. The report renders correctly in HTML Reading mode and I can open it and modify it in the Java applet.

I am getting some strange errors in Webi documents like errors trying to modify the linking to an element or get disappeared input controls in Java applet which are visible in HTML mode.

I think that I have made several changes in the report and it can be in a corrupted state or similar.

Is there any way to fix the error "String index out of range: 5 (Error: INF)"? And a way to verify the health of the report?

Thanks