The GenericDialog.setSmartRecording() method (used e.g. for the 'Image>Stacks>Z project...' command since ImageJ 1.48s) leads to unexpected behaviour when recording commands with default values. To reproduce, run the following commands:

- Plugins > Macros > Record...
- File > Open Samples > Bat Cochlea Volume (19K)
- Image > Stacks > Z Project...
   - click on OK without modifying the default parameters (i.e. using Average Intensity)

The recorded macro commands are:

    run("Bat Cochlea Volume (19K)");
    run("Z Project...");

which, when run, result in the ZProjection dialog being shown. Instead, a user of the command recorder expects the commands to be run *without* showing additional dialogs.

To fix this, the affected commands (Analyze Particles, Image Sequence, and Z Project [1]) should record *at least one* parameter (or simply a space character) even when invoked with only default parameters.
E.g.

    run("Z Project...", " ");

[1]: according to http://imagej.nih.gov/ij/notes.html
(see 1.48s 7 March 2014)