### 2.7. You are trying to act on a layer group

Figure 4.5. Layer group selected

Layers dialog where a layer group is selected.

How to tell: Check the Layers Dialog to see if the active layer is actually a Layer group. When a layer group is not empty, a small icon or appears in front of the layer group's thumbnail and name. Most actions don't work on a layer group, in which case an error message will show up: “Cannot paint on layer groups.”

How to fix: You need to make a layer active that is not a layer group. Select a layer by clicking it in the Layers Dialog. If the active layer group has a + sign in front of it, it is collapsed. You can click it to expand and show the individual layers inside that group.

2.6. You are trying to act outside the layer |  | 2.8. The image is in indexed color mode.

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