I have created a application base on .net framework 2.0 in a windows XP machine, then I copied the app to another Windows 2003 server machine which has installed .net framework 3.5 but the app can't be launched and throught the event view i got the following errors:

Event Type: Error
Event Source:   .NET Runtime 2.0 Error Reporting
Event Category: None
Event ID:   5000
Date:       5/15/2010
Time:       2:19:39 PM
User:       N/A
Computer:   AVCNDAECLIU4
Description:
EventType clr20r3, P1 ftacsearchpopup.exe, P2 1.0.0.0, 

P3 4bee3c42, P4 ftacsearchpopup, P5 1.0.0.0, P6 4bee3c42, P7 11, P8 e, P9 system.io.fileloadexception, P10 NIL.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 63 00 6c 00 72 00 32 00   c.l.r.2.
0008: 30 00 72 00 33 00 2c 00   0.r.3.,.
0010: 20 00 66 00 74 00 61 00    .f.t.a.
0018: 63 00 73 00 65 00 61 00   c.s.e.a.
0020: 72 00 63 00 68 00 70 00   r.c.h.p.
0028: 6f 00 70 00 75 00 70 00   o.p.u.p.
0030: 2e 00 65 00 78 00 65 00   ..e.x.e.
0038: 2c 00 20 00 31 00 2e 00   ,. .1...
0040: 30 00 2e 00 30 00 2e 00   0...0...
0048: 30 00 2c 00 20 00 34 00   0.,. .4.
0050: 62 00 65 00 65 00 33 00   b.e.e.3.
0058: 63 00 34 00 32 00 2c 00   c.4.2.,.
0060: 20 00 66 00 74 00 61 00    .f.t.a.
0068: 63 00 73 00 65 00 61 00   c.s.e.a.
0070: 72 00 63 00 68 00 70 00   r.c.h.p.
0078: 6f 00 70 00 75 00 70 00   o.p.u.p.
0080: 2c 00 20 00 31 00 2e 00   ,. .1...
0088: 30 00 2e 00 30 00 2e 00   0...0...
0090: 30 00 2c 00 20 00 34 00   0.,. .4.
0098: 62 00 65 00 65 00 33 00   b.e.e.3.
00a0: 63 00 34 00 32 00 2c 00   c.4.2.,.
00a8: 20 00 31 00 31 00 2c 00    .1.1.,.
00b0: 20 00 65 00 2c 00 20 00    .e.,. .
00b8: 73 00 79 00 73 00 74 00   s.y.s.t.
00c0: 65 00 6d 00 2e 00 69 00   e.m...i.
00c8: 6f 00 2e 00 66 00 69 00   o...f.i.
00d0: 6c 00 65 00 6c 00 6f 00   l.e.l.o.
00d8: 61 00 64 00 65 00 78 00   a.d.e.x.
00e0: 63 00 65 00 70 00 74 00   c.e.p.t.
00e8: 69 00 6f 00 6e 00 20 00   i.o.n. .
00f0: 4e 00 49 00 4c 00 0d 00   N.I.L...
00f8: 0a 00                     ..