Why do my charts look like this

I have a problem, I am not sure why but this morning when I opened my charts I found some of them were showing the full vertical scale, i.e. from 0 up, making the charts impossible to read. I can not seem to undo this. Any ideas? All the charts have the same settings and if I open a new chart it opens in the same way.

Thanks

no history

download 'em

No, don't think it is that. I can try different timeframes and see the data is there but it is all just condensed in the top of the chart and only for some charts not others.

open delete history

Hey mate,
try to reinstall your platform, this will bring it back to its default settings.

Open the History Centre in Tools menu and find the concerned symbol and time frame. The top most row in the database is likely to be the culprit. Delete that row and the chart should automatically readjust.