I found a strange behaviour:
With the DATA-Tab I add a field "test" and set the permissions; this field is correctly updated in the DB (looked after with phpmyadmin), revisions for this table is enabled.
Result while saving a record: "Column 'test' not found"
Doing the same while revisions are disabled: Record saved correctly.
For testing I do the same without DATA-Tab, but the result was the same; seems to depend on the enabled revisions.
With the DATA-Tab I add a field "test" and set the permissions; this field is correctly updated in the DB (looked after with phpmyadmin), revisions for this table is enabled.
Result while saving a record: "Column 'test' not found"
Doing the same while revisions are disabled: Record saved correctly.
For testing I do the same without DATA-Tab, but the result was the same; seems to depend on the enabled revisions.