IXpand flash drive

After copying photos to the flash drive it gives me the option to delete photos from my iPhone. When I press the button it says an error has occurred. What is this error and how do I fix it?

I would start by going to your native photos app and see if the pictures can be deleted from there. If so can you provide some more info so we can try to isolate the issue?

What version of the iXpand do you have? Click here to see the different version of the iXpadn USB flash drives

What App version and FW version are you using?

How many pictures are you trying to delete?

What iOS device are you using?

What version of iOS are you using?

The more info you can provide will be helpful in trying to find a solution for you. 

I have sdx 3.0 64g.

fw 4.2.1

app. ixpand drive

pics 100 to delete

my device iphone 6s

ios 10.0.2

4.2.1 is the app version. FW version is listed in settings about. that said if you have 4.2.1 app you should have the latest FW. 

Can the photos be deleted from the native iOS Photos app?

How much free space is on the iphone internal storage?

Are any of the photos live photos, slow motion videos or edited in any other way?

If you try deleting them in smaller chunks say 10 photos does it complete without error?