Different browsers sometimes will require different type of events to execute a method. I have found by changing the replay type sometime will fix the problem.

How to change the replay modes during execution of a test.

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Setting.WebPackage(''ReplayType'') = 2

Indicates how mouse operations should be run. The value can be one of the following:
1 - Runs mouse operations using browser events.
2 - Runs mouse operations using the mouse.
Default is 1

I normally only change the replay type for the line of code that has problem of execution and then set it back to default.

For example:

Setting.WebPackage(''ReplayType'') = 2
Browser(''qqqq'').Page(''uuuu'').Webbutton(''bbb'').click
Setting.WebPackage(''ReplayType'') = 2$