If you encounter any problem in the browser, try to open the developer console (ctrl + shift + i in firefox and chrome) and look for error messages. Some of the messages are covered in this FAQ.
If your problem is not covered in this FAQ, either create a new issue at the github repository or send an email to [email protected].
If yes and the error console shows the following error, then it is likely that your uploader altered the data/r* files:
Uncaught RangeError: byte length of Float32Array should be a multiple of 4
To solve this, tell your uploader to treat files as BINARY rather than ASCII. In Filezilla you can do this here: Edit -> Settings -> Transfers -> File Types -> Default Transfer Type
Another option is to pack all your data into a zip file, upload it and unpack it on the server.
IIS may cause problems with files that have no extension, such as the data/r* files for potree format up to 1.3.
In this case, you can try to configure IIS: http://www.serverintellect.com/support/iis/enable-no-extensions/
As of now, the PotreeConvert expects rgb colors in LAS or LAZ files in a range of 0-65536. If you have colors in a 0-255 range, you will have to upscale them before conversion. You can use the lastools to do this:
las2las -i pointcloud.las -scale_rgb_up
Yes, the license allows you to do this free of charge. If you do use potree, please consider supporting this project with a donation.