Zips will no longer properly save on SD card

[yhelothar]

So I have a 16GB SD card I use on my laptop as a secondary drive. Now any zip that I save to it won't open. Using windows zip, I get the error message, please insert last disk of the multi-volume set and click ok to continue. Using winrar, I get that the archive is either in unknown format or damaged.
If I save the zip to my hard drive, it works fine. If I copy the zip that I saved on my sd card to my hard drive, it gives the same error.
Past zips that I saved works fine.
Any ideas what's going on here and how to fix?

 

[bendixG15]

Did you try reformatting the 16gb card ?

 

[0roo0roo]

reformat it as said.
test it with other files, verify integrity of said copied files with md5 or whatever tools, open source/free etc.