Hi Catalina,
Sorry about the late reply!

Can you kindly clarify a few things:
- Which version of Little Reader are you using now? For instructions on how to find your software version, please follow this link:
http://support.brillkids.com/index.php/article/how-to-find-out-software-version- Can you confirm if you are missing images in your imported Categories (the ones you created before switching to your new laptop), or if this problem happened only to the Categories you started to work on in your new laptop?
- By "pasting it from Firefox," what exactly do you mean - are you trying to add images that are not originally saved in your computer?
In the meantime, please try saving the images in your computer first, and then add those to your LR word file.
Let me know how this works for you. If you are still having problems, do send us screenshots showing what happens when you add your images.