Product and version: Filemaker Go 14 and Filemaker Pro Advanced 188.8.131.525
OS and version: iOS 10.2.1 and MacOS 10.12.3
Hardware: iPad Pro and Macbook
Description: If a shared file has more than one punctuation in its filename, sharing will fail.
How to replicate:
Named file as "database_1.5.fmp12". Sharing (over LAN) will not work, with FMP_GO giving a "file not found" error. Renaming the file to "database_1_5.fmp12" makes the sharing work, concluding that the punctuation is the problem.