I also have encountered this error - The original developer created a word document after installing the library on a development server - I’ve deployed our solution that uses the library in a web service (WCF) to our PreProduction web server and no checkboxes render as small fat circles.
Thanks for using our products.
As far as I can understand, you are working with MS word documents so the issue seems to be related to Aspose.Words. For your convenience, I am moving this post to Aspose.Words forum and I believe our team of experts taking care of this product would be in better position to answer this query. We are sorry for your inconvenience.
Thanks for your request. Please make sure that Wingdings 2 font is installed on the PC where you perform conversion to PDF. If not, please try to install Wingdings2 font. This should fix the problem. Please let me know in case of any issues. I will be glad to help you.