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7zip Add Operation Not Supported?

7zip Add Operation Not Supported?

When I try to add a new file to a zipped archive, I get the message "Operation not supported." Anyone know how to fix this?

Asked by: Guest | Views: 55
Total answers/comments: 2
Guest [Entry]

"There might be a problem with the permissions of the file.

Right-click the file, choose Properties, then Security, and verify that you have the permissions to modify this file. You might also verify you have the necessary permission on the directory, since 7Zip probably needs to create a new archive for this operation."
Guest [Entry]

"7-Zip does not support write operations on all formats, there are plenty of formats for which it provides 'Unpacking only'.

See 7-zip.org/

Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z."