hi there again…
i was doing topology on a model,and the zbrush crashed… luckily i had saved the tool… now when i load the tool… i am able to see the topology i have created but now i am not able to edit ,draw or move them … 
You still have the zsphere menus available on your mesh so, if you go to the topology tab and hit “edit topology” you should see it switch to your “new topology” wireframe again to continue editing your mesh.
RiVvenGuard thankyou it worked 