Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phppptx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
Could you provide any additional detail on what the output of the merge woud be like? For example, how does the class handle the possiblity that each merging file may have different layouts or themes?