Hi Maxim,

Thank you for the prompt reply.

I've tried to attached my dwg file, but I'm afraid it's too big, so I enclosed just a print screen which doesn't say much.

The file opens, but it's very slow and doesn't react on my commands...

Do you know how to fix it?...My knowledge in this field is very low... I did some of steps to recover the file but without good results, I'm afraid.