Crash when switching back from sub-presentation to main presentation

Crash when switching back from sub-presentation to main presentation if map used in main presentation

Test steps:

Import map -> Texture maps -> Water

Drag Water1.png from project palette to scene view

Save presentation

Create new sub-presentation (File -> new -> presentation) -> sub-presentation opens

In project palette try opening the main presentation by doubleclicking name

-> crashes

Attached sample project where crash happens (open sub-presentation first and try changing back to main presentation)