inplaceSelect is not editable, throwing javascript error

[pramanish]

I am using inputSelect in my code and I am facing problem that its not editable sometimes and when I check firefox error console I am seeing below error :

Error: Richfaces.InplaceSelectStyles is not a constructor

Source File: http://localhost:8080/myapp/a4j/g/3_3_3.Finalscripts/inplaceselect.js.seam

Line: 2

Below is how I am using this component in my xhtml page :

<rich:inplaceSelect layout="block"

                                                                 value="#{incomeSource.includeFlag}" id="includeFlag"

                                                                 required="true"

                                                                 requiredMessage=" Include Flag at row #{row+1} wasn't filled."

                                                                 changedHoverClass="hover" viewHoverClass="hover"

                                                                 viewClass="inplace" changedClass="inplace"

                                                                 selectOnEdit="true" listWidth="67" selectWidth="65">

                                                                 <s:selectItems var="iFlags" value="#"

                                                                      label="#{iFlags.flag}" />

                                                                 <s:convertEnum />

                                                            </rich:inplaceSelect>

It works sometimes when above error is not thrown. I am not sure what's reason of this error and how it works sometimes.

Any idea, how to fix this issue.

I really appreciate your help on this.

Let me know If you need more info.

Thanks,

Manish