I haven't try the diff yet, but the (current) package is obvious broken I am running ubuntu jaunty (9.0.4), with nmap version (downloaded from the ubuntu repo) :

/usr/bin/nmap -v

Starting Nmap 4.76 ( http://nmap.org ) at 2009-07-14 22:29 PDT
Read data files from: /usr/share/nmap
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 0.16 seconds


The following is produced by: 
/usr/bin/nmap --script ALL 127.0.0.1 -d

Scanning 127.0.0.1 [1000 ports]
Discovered open port 80/tcp on 127.0.0.1
Increased max_successful_tryno for 127.0.0.1 to 1 (packet drop)
Discovered open port 139/tcp on 127.0.0.1
Completed Connect Scan at 22:27, 1.17s elapsed (1000 total ports)
Overall sending rates: 930.44 packets / s.
SCRIPT ENGINE: Initiating script scanning.
SCRIPT ENGINE: Script scanning 127.0.0.1.
SCRIPT ENGINE: '/usr/share/nmap/scripts/dns-test-open-recursion.nse' threw a run time error and could not be loaded.
/usr/share/nmap/scripts/dns-test-open-recursion.nse:12: module 'comm' not found:
        no field package.preload['comm']
        no file '/usr/share/nmap/nselib/comm.lua'
        no file './comm.lua'
        no file '/usr/local/share/lua/5.1/comm.lua'
        no file '/usr/local/share/lua/5.1/comm/init.lua'
        no file '/usr/local/lib/lua/5.1/comm.lua'
        no file '/usr/local/lib/lua/5.1/comm/init.lua'
        no file './comm.so'
        no file '/usr/local/lib/lua/5.1/comm.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
SCRIPT ENGINE: error while initializing script rules:
/usr/share/nmap/scripts/script.db:6: dns-safe-recursion-port.nse is not a file!
stack traceback:
        [C]: in function 'Entry'
        /usr/share/nmap/scripts/script.db:6: in main chunk
        [C]: ?
        [C]: ?

SCRIPT ENGINE: Script scanning completed.
SCRIPT ENGINE: Aborting script scan.
Host 127.0.0.1 appears to be up ... good.
Scanned at 2009-07-14 22:27:07 PDT for 1s
Interesting ports on 127.0.0.1:
Not shown: 993 closed ports
Reason: 993 conn-refused
PORT      STATE SERVICE      REASON
---edited result ---
Final times for host: srtt: 496 rttvar: 232  to: 100000

Read from /usr/share/nmap: nmap-services.
Nmap done: 1 IP address (1 host up) scanned in 1.43 seconds

I also tried to download source from svn (version 4.90RC2, svn r12639) and made a new build, another (similar) error message appears: 
nmap --script ALL 127.0.0.1 -d

NSE: SMB: Login as \<blank> succeeded
NSE: MSRPC: Failed to enumerate users through SAMR: NT_STATUS_ACCESS_DENIED (samr.connect4)
NSE: smb-brute: Couldn't enumerate users (normal for Windows XP and higher), using unpwdb initially
NSE: smb-brute: Opening password list
NSE: smb-brute: Starting the initial SMB session
NSE: smb-brute against 192.168.2.3 threw an error!
/usr/local/share/nmap/nselib/smb.lua:214: bad argument #2 to 'format' (number expected, got nil)
stack traceback:
        [C]: in function 'format'
        /usr/local/share/nmap/nselib/smb.lua:214: in function 'get_status_name'
        /usr/local/share/nmap/nselib/smb.lua:1233: in function </usr/local/share/nmap/nselib/smb.lua:1115>
        (tail call): ?
        /usr/local/share/nmap/scripts/smb-brute.nse:325: in function 'check_login'
        /usr/local/share/nmap/scripts/smb-brute.nse:550: in function 'initialize'
        /usr/local/share/nmap/scripts/smb-brute.nse:896: in function 'go'
        /usr/local/share/nmap/scripts/smb-brute.nse:1004: in function </usr/local/share/nmap/scripts/smb-brute.nse:993>
        (tail call): ?

Completed NSE at 22:32, 0.05s elapsed
NSE: Starting runlevel 1 scan
Initiating NSE at 22:32
NSE: NSE Script Threads (26) running: