Tool palette icons shown wrong

[rschnabelHRATL]

Goodday everyone, 

Im working with a toolpalette with self-made dynamic blocks.
Some of the dynamic blocks arent shown correctly in the thumbnail / icon.
Im trying to figure out why this occurs.
When inserted from the tool palette the icon appears wrong in the recent blocks list.
When editing the block and creating a new version the icon does show correctly.

Any extra clarity would be welcome.

Left is the block thats inserted through tool palette right away.
Right is the block thats edited and shown in recent blocks.
Theyre supposed to be the same icon. 

[pendean]

The ''left" is how you last saved that block, that is the preview image raster file saved in the DWG.
The "right" is more current but it's never going to affect your external file's save-state.

[rschnabelHRATL]

How can i make sure that the thumbnail generated is displayed like the right icon?

[Brock_Olly]

Go back to your original block, zoom in and then save it again.

[CGBenner]

@rschnabelHRATL Did the information provided answer your question? If so, please use Accept Solution so that others may find this in the future. Thank you very much!