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-rw-r--r--src/fileio.cpp2
-rw-r--r--src/newgrf.cpp7
2 files changed, 6 insertions, 3 deletions
diff --git a/src/fileio.cpp b/src/fileio.cpp
index 7abf732fb..bcccb3419 100644
--- a/src/fileio.cpp
+++ b/src/fileio.cpp
@@ -337,7 +337,7 @@ FILE *FioFOpenFileSp(const char *filename, const char *mode, Searchpath sp, Subd
FILE *FioFOpenFileTar(TarFileListEntry *entry, size_t *filesize)
{
FILE *f = fopen(entry->tar_filename, "rb");
- assert(f != NULL);
+ if (f == NULL) return f;
fseek(f, entry->position, SEEK_SET);
if (filesize != NULL) *filesize = entry->size;
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index c226d295e..1426208e7 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -6212,8 +6212,11 @@ void LoadNewGRF(uint load_index, uint file_index)
if (c->status == GCS_DISABLED || c->status == GCS_NOT_FOUND) continue;
if (stage > GLS_INIT && HasBit(c->flags, GCF_INIT_ONLY)) continue;
- /* @todo usererror() */
- if (!FioCheckFileExists(c->filename)) usererror("NewGRF file is missing '%s'", c->filename);
+ if (!FioCheckFileExists(c->filename)) {
+ DEBUG(grf, 0, "NewGRF file is missing '%s'; disabling", c->filename);
+ c->status = GCS_NOT_FOUND;
+ continue;
+ }
if (stage == GLS_LABELSCAN) InitNewGRFFile(c, _cur_spriteid);
LoadNewGRFFile(c, slot++, stage);