If you have a question that is not in this list, please mail us.

Question: Why do process dialogs often display more options than are or appear to be relevant?

Answer 1: When processing sequences some of the frames may have different properties and their layers may have different properties. These may require the settings in the dialog.

Answer 2: In order to be consistent and less confusing we have decided to show all available options as much as possible. The alternative was to show dialogs that keep looking different.

Answer 3: Recording is more useful if all options are specified.

Question: Why do I get asked about saving so often - even when I think the document has not been modified?

Answer: This is because the program has no concept of “saved” or “not saved”. There are many reasons for this design.

1) The document's disk file contains all the data and references used to find it's history files. This means that an action like undoing or redoing actually makes a document “not saved”. Our design avoids the need to constantly keep track of these changes.

2) A process may run on a sequence, but if it was not able to process anything (trying to blur a binary image), or if it had no effect on the data (“Mouse Popup->Selection->Set All Others” when they all just happen to be already set the same), or if it was cancelled mid sequence, it may not have made any change to the document. It would be difficult and very inefficient to verify that a change was made.

3) It would actually be impossible to decide on the “saved state” of a document if in future a macro language enables me to change the document by writing and running my own code while forgetting to add the instructions to say the document has changed.

4) As it is not always possible to determine that a change has been made and, therefore, it is also possible to wrongly identify a change. It is a better design to just assume that a document is never saved.

Question: Why do some processes scramble my paletted pixel images?

Answer: This could be caused by several factors. The important thing is to preserve the pixel to color model mapping, any tiny changes will cause scrambling.

1) If the process has an interpolation or antialiasing option this must be turned off because it will introduce noise into the image and the noised pixel value will map to the wrong color model entry.

2) Avoid converting to and from variable range images by using obscure pixel value ranges that cannot be scaled. i.e. do not convert a byte image of range 255 to float image of range 0.9.

3) Most blitter operations change the pixel values and should be avoided. i.e. average and multiply.

4) Changing the size of the paste layer will also scramble the paste because interpolation is used for resizing.

Question: I am trying all sorts of filters and the image is not changing at all.

Answer: This is probably because no processable channels or vector shapes are selected, or the selection is small, zero, empty, or in negative image space. It could also be that the document is locked because a process has not finished or has crashed. File->Unlock.

Question: When I save a document with a specified file name why does the title not change?

Answer: The title is independent of the name of the disk file and saving to disk can not change it. One reason for this is to allow the title to contain characters that might otherwise be invalid for filenames. To change the title use File->Rename.

Question: Resizing has made parts of my image disappear.

Answer: Resizing an image does not change the frame size. The frame has not been adjusted to fit your new image dimensions. Use the default shortcut Ctrl+Alt+F.

Question: Where is the calibration guide?

Answer: The calibration guide is drawn on the frame and is only visible if the layer is moved away from the top left of the frame. Type L and then drag to move it. The frame size can also be adjusted to a larger size using Adjust->Resize Frame.

Question: I cannot open files. I keep getting a Decoder Error message.

NOTE: as of current release the settings below are no longer editable.

Answer: This is most probably caused by a codec setting.

1) Open the Codecs Dialog and try selecting ”Decide File Types Based On Extension” in the decode menu instead of ”Decide File Types Based On Content”.

2) Check the table to make sure the file type is listed and enabled. You can add missing extensions by appending a comma followed by the extension text into the comma delimited list.

3) In the unlikely event that no codecs are listed the configuration file has probably been damaged. Try a reinstall.

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