@swyambhu ... You have modified and adapted the script you use for decompression Arc+nz?
In ISS ... posted by razor on the first page :
Code:
[Files]
Source: Include\arc.ini; DestDir: {tmp}; Flags: dontcopy;
//Source: Include\cls-nanozip.dll; DestDir: {tmp}; Flags: dontcopy; Disabled
Source: Include\english.ini; DestDir: {tmp}; Flags: dontcopy;
Source: Include\ISDone.dll; DestDir: {tmp}; Flags: dontcopy;
Source: Include\nz64.exe; DestDir: {tmp}; Flags: dontcopy; Added
Source: Include\nz.exe; DestDir: {tmp}; Flags: dontcopy; Added
Source: Include\unarc.dll; DestDir: {tmp}; Flags: dontcopy;
&
Code:
ExtractTemporaryFile('arc.ini');
//ExtractTemporaryFile('cls-nanozip.dll'); Disabled
ExtractTemporaryFile('english.ini');
ExtractTemporaryFile('nz.exe'); Added
ExtractTemporaryFile('nz64.exe'); Added
ExtractTemporaryFile('unarc.dll');
In Include Folder....
Extracting successfully Tested....