I used to use iMacros all the time and to make the macro wait for the page to load it was as simple as:
SET !WAITPAGECOMPLETE YES
However now this doesn't work and it seems from the iMacros website http://wiki.imacros.net/!WAITPAGECOMPLETE that this feature isn't even compatible with Firefox anymore.
What is an alternative way of doing this other than waiting a specified amount of time? Surely there must be, why would subsequent version regress?
Thanks in advance P.S. Reverting back to IE is not an option
Use
SET !TIMEOUT_PAGE 120
Then you will increase waiting time for a page to 120 seconds.