Have you guys tried:

this.tvwReports.ImageList = this.imgReports

? That's what I use and it works fine.

>The .object needs to be used like this:
>

this.tvwReports.ImageList = this.imgReports.object

>i.e. to get a reference to the imagelist object
>>
>>Same problem. Putting back the term object so as to produce
>> THISFORM.PAGEFRAME1.PAGE1.NDTREEVIEW1.OBJECT.imagelist=;
>> THISFORM.PAGEFRAME1.PAGE1.IMAGELIST