a snippet code will be helpful..
I use this component with a simple way:
<a4j:support event="onuploadcomplete" limitToList="true" reRender="myForm"/>
<h:outputText value="text" />
flash plugin version could be the reason if you opening from different PC's
What does it mean: ' different PC's ' ?
I believe that under "sometimes" you mean in some concrete browsers or at some client workstations only. So seems the problem with particular Flash plugin versions there.
My enironment is: Windows Vista, Adobe flash 10,Firefox 3.6.3 latest.
I think it is an often used environment.
I think this not a flash plugin error, because I never meet this error on the richfaces rich:fileupload demo page.
The only different from the demo page, is that I use a custom richfaces fileupload css
do you able to reproduce that without flash enabled?
I went through to the richfaces document, and I found that maxFilesQuantity="1" , causes the problem, because It disable the button after fileupload.
But If I had multiple rich:fileUploader with maxFilesQuantity="100", and I upload 1 picture with the first rich:fileupload component, the second will be disabled, If I not reRender the second rich:fileupload.
I tested many times and I think <a4j:support event="onuploadcomplete" limitToList="true" reRender="uploader"/>, solved the problem.
The only bug with this, that when onuploadcomplete is occurred for 0.5sec the rich:fileupload buton will be disabled!!!(always) than normal.
So How can I avoid this effect If would like to use onuploadcomplete event to reRender?