Some system I tested on didn't quite get the END part and seeked beyond the end of the file which caused the CRC checksum to be written in a place where the exehead didn't expect it. Because of this, all solid installers compiled on that system failed CRC.

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3456 212acab6-be3b-0410-9dea-997c60f758d6

Source/build.cpp

@@ -2605,6 +2605,8 @@ int CEXEBuild::write_output(void)
     }
     compressor->End();
 
+    unsigned fend = ftell(fp);
+
     fh.length_of_all_following_data=ftell(fp)-fd_start+(build_crcchk?sizeof(int):0);
     INFO_MSG(
       "%10d / %d bytes\n",
@@ -2629,7 +2631,7 @@ int CEXEBuild::write_output(void)
       }
     }
 #endif
-    fseek(fp,0,SEEK_END); // reset eof flag
+    fseek(fp,fend,SEEK_SET); // reset eof flag
   }
 #endif